$STWD
STARWOOD PROPERTY TRUST, INC. Stock $stwd

$stwd Overview Financials Valuation SEC Filings Company Website

2022 Q1 Form 10-K Financial Statement

#000162828022003917 Filed on February 25, 2022

Income Statement

Concept	2022 Q1	2021 Q4	2021 Q3
Revenue	$294.0M	$296.1M	$302.3M
YoY Change	2.35%	1.92%	13.03%
Cost Of Revenue	$181.7M	$192.6M	$139.3M
YoY Change	27.9%	35.25%	16.93%
Gross Profit	$346.3M	$103.5M	$163.0M
YoY Change	138.65%	-30.09%	9.93%
Gross Profit Margin	117.79%	34.96%	53.93%
Selling, General & Admin	$53.61M	$69.21M	$70.38M
YoY Change	-20.46%	-10.46%	2.0%
% of Gross Profit	15.48%	66.85%	43.17%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$12.76M	$16.94M	$22.52M
YoY Change	-43.3%	-28.23%	-4.17%
% of Gross Profit	3.68%	16.36%	13.81%
Operating Expenses	$61.61M	$105.9M	$91.88M
YoY Change	-32.0%	19.28%	3.01%
Operating Profit	$284.7M	-$2.378M	$71.15M
YoY Change	422.35%	-104.01%	20.38%
Interest Expense	$126.5M	$114.2M	$115.5M
YoY Change	22.32%	61.76%	20.37%
% of Operating Profit	44.42%		162.38%
Other Income/Expense, Net	$331.7M	-$898.0K	$77.06M
YoY Change	371.12%	124.5%	-36.48%
Pretax Income	$381.9M	$105.3M	$148.0M
YoY Change	206.09%	-17.72%	-17.59%
Income Tax	-$2.450M	$2.291M	$7.501M
% Of Pretax Income	-0.64%	2.18%	5.07%
Net Earnings	$324.6M	$91.45M	$128.6M
YoY Change	191.44%	-14.51%	-15.3%
Net Earnings / Revenue	110.41%	30.88%	42.54%
Basic Earnings Per Share	$1.04		$0.44
Diluted Earnings Per Share	$1.02	$300.7K	$0.44
COMMON SHARES
Basic Shares Outstanding	304.8M shares	288.6M shares	288.3M shares
Diluted Shares Outstanding	313.3M shares		295.4M shares

Balance Sheet

Concept	2022 Q1	2021 Q4	2021 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$264.2M	$217.4M	$273.3M
YoY Change	-74.34%	-83.28%	-75.7%
Cash & Equivalents	$264.2M	$217.4M	$273.3M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$388.0M	$333.6M	$381.4M
YoY Change	-14.35%	-49.37%	-16.72%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.387B	$2.207B	$2.229B
YoY Change	6.3%	-2.83%	0.94%
Goodwill	$259.8M	$259.8M	$259.8M
YoY Change	0.0%	0.0%	0.0%
Intangibles	$62.15M	$63.56M	$65.12M
YoY Change	-6.93%	-9.35%	-12.16%
Long-Term Investments	$63.01M	$64.32M	$61.83M
YoY Change	-11.43%	2.55%	5.65%
Other Assets	$109.6M	$104.6M	$110.5M
YoY Change	-7.93%	-34.24%	-15.67%
Total Long-Term Assets	$80.80B	$83.52B	$81.60B
YoY Change	1.96%	4.12%	1.8%
TOTAL ASSETS
Total Short-Term Assets	$388.0M	$333.6M	$381.4M
Total Long-Term Assets	$80.80B	$83.52B	$81.60B
Total Assets	$81.19B	$83.85B	$81.98B
YoY Change	1.86%	3.68%	1.69%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$196.1M	$189.7M	$210.1M
YoY Change	10.19%	-8.36%	4.52%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$610.7M	$2.068B	$273.6M
YoY Change	-91.21%	214.81%	241.98%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.012B	$2.482B	$646.8M
YoY Change	-86.13%	138.42%	46.66%
LONG-TERM LIABILITIES
Long-Term Debt	$17.04B	$14.95B	$15.58B
YoY Change	157.62%	23.04%	25.62%
Other Long-Term Liabilities	$56.22B	$59.77B	$60.91B
YoY Change	-7.73%	-4.86%	-3.15%
Total Long-Term Liabilities	$73.27B	$74.72B	$76.49B
YoY Change	8.47%	-0.34%	1.59%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.012B	$2.482B	$646.8M
Total Long-Term Liabilities	$73.27B	$74.72B	$76.49B
Total Liabilities	$74.28B	$77.20B	$77.13B
YoY Change	-0.76%	1.57%	1.85%
SHAREHOLDERS EQUITY
Retained Earnings	$669.9M	$493.1M	-$688.0M
YoY Change	-202.31%	-178.3%	14.85%
Common Stock	$5.712B	$5.676B	$5.273B
YoY Change	9.26%	8.9%	1.34%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.280B	$6.073B	$4.488B
YoY Change
Total Liabilities & Shareholders Equity	$81.19B	$83.85B	$81.98B
YoY Change	1.86%	3.68%	1.69%

Cashflow Statement

Concept	2022 Q1	2021 Q4	2021 Q3
OPERATING ACTIVITIES
Net Income	$324.6M	$91.45M	$128.6M
YoY Change	191.44%	-14.51%	-15.3%
Depreciation, Depletion And Amortization	$12.76M	$16.94M	$22.52M
YoY Change	-43.3%	-28.23%	-4.17%
Cash From Operating Activities	$154.4M	-$528.2M	-$749.7M
YoY Change	-42.99%	-201.7%	207.78%
INVESTING ACTIVITIES
Capital Expenditures		-$28.09M
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$554.8M	-$2.236B	-$651.7M
YoY Change	-50.43%	554.22%	97.96%
Cash From Investing Activities	-$554.8M	-$2.264B	-$651.7M
YoY Change	-50.43%	562.44%	97.96%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$251.0K	$393.1M
YoY Change	-4.2%
Debt Paid & Issued, Net	$5.154B
YoY Change	157.51%
Cash From Financing Activities	$452.5M	2.731B	1.425B
YoY Change	-24.23%	8124.43%	154.65%
NET CHANGE
Cash From Operating Activities	$154.4M	-528.2M	-749.7M
Cash From Investing Activities	-$554.8M	-2.264B	-651.7M
Cash From Financing Activities	$452.5M	2.731B	1.425B
Net Change In Cash	$52.12M	-61.94M	23.31M
YoY Change	-120.75%	-129.38%	-275.3%
FREE CASH FLOW
Cash From Operating Activities	$154.4M	-$528.2M	-$749.7M
Capital Expenditures		-$28.09M
Free Cash Flow		-$500.1M
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001465128
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021Q4	stwd	Loans As Percent Of Consolidated Vie Assets LoansAsPercentOfConsolidatedVieAssets	0.99
CY2019	us-gaap	Revenues Revenues	1196419000	USD
CY2021	stwd	Management Fees ManagementFees	167773000	USD
CY2020	stwd	Management Fees ManagementFees	127127000	USD
CY2019	stwd	Management Fees ManagementFees	119132000	USD
CY2021	us-gaap	Interest Expense InterestExpense	445087000	USD
CY2020	us-gaap	Interest Expense InterestExpense	419763000	USD
CY2019	us-gaap	Interest Expense InterestExpense	508729000	USD
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	171302000	USD
CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	157874000	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	155112000	USD
CY2021	stwd	Acquisition And Investment Pursuit Costs AcquisitionAndInvestmentPursuitCosts	1184000	USD
CY2020	stwd	Acquisition And Investment Pursuit Costs AcquisitionAndInvestmentPursuitCosts	3572000	USD
CY2019	stwd	Acquisition And Investment Pursuit Costs AcquisitionAndInvestmentPursuitCosts	1056000	USD
CY2021	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	111667000	USD
CY2020	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	117676000	USD
CY2019	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	122982000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	83001000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	94405000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	113322000	USD
CY2021	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	8335000	USD
CY2020	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	43153000	USD
CY2019	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	7126000	USD
CY2021	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-708000	USD
CY2020	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-838000	USD
CY2019	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-2365000	USD
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	989057000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	964408000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	1029824000	USD
CY2021	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	162333000	USD
CY2020	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	78258000	USD
CY2019	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	236309000	USD
CY2021	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	3578000	USD
CY2020	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	-3715000	USD
CY2019	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	-3640000	USD
CY2021	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	-387000	USD
CY2020	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	5393000	USD
CY2019	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	833000	USD
CY2021	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	69050000	USD
CY2020	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	133124000	USD
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2019	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate201613Member
CY2020	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://www.starwoodpropertytrust.com/20211231#AccountingStandardsUpdated202006Member
CY2020	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://www.starwoodpropertytrust.com/20211231#AccountingStandardsUpdated202006Member
CY2021Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-34436
CY2021	dei	Entity Registrant Name EntityRegistrantName	Starwood Property Trust, Inc.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	27-0247747
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	591 West Putnam Avenue
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Greenwich
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	CT
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	06830
CY2021	dei	City Area Code CityAreaCode	203
CY2021	dei	Local Phone Number LocalPhoneNumber	422-7700
CY2021	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value per share
CY2021	dei	Trading Symbol TradingSymbol	STWD
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	7164419530	USD
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CY2021	dei	Auditor Firm AuditorFirmId	34
CY2021	dei	Auditor Name AuditorName	DELOITTE & TOUCHE LLP
CY2021	dei	Auditor Location AuditorLocation	Miami, Florida
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CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	67270000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	77444000	USD
CY2021Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	59225000	USD
CY2020Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	90684000	USD
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CY2021Q4	us-gaap	Notes Receivable Net NotesReceivableNet	15536849000	USD
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CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	43993000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	493106000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-629733000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	6072536000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	4488898000	USD
CY2021Q4	us-gaap	Minority Interest MinorityInterest	361356000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	373678000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6433892000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4862576000	USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	83850397000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	80873509000	USD
CY2021	us-gaap	Interest And Fee Income Loans Commercial InterestAndFeeIncomeLoansCommercial	800291000	USD
CY2020	us-gaap	Interest And Fee Income Loans Commercial InterestAndFeeIncomeLoansCommercial	751943000	USD
CY2019	us-gaap	Interest And Fee Income Loans Commercial InterestAndFeeIncomeLoansCommercial	724013000	USD
CY2021	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	45168000	USD
CY2020	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	54412000	USD
CY2019	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	76629000	USD
CY2021	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	38739000	USD
CY2020	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	29634000	USD
CY2019	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	54296000	USD
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	278831000	USD
CY2020	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	297828000	USD
CY2019	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	337966000	USD
CY2021	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	7059000	USD
CY2020	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2338000	USD
CY2019	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3515000	USD
CY2021	us-gaap	Revenues Revenues	1170088000	USD
CY2020	us-gaap	Revenues Revenues	1136155000	USD
CY2019	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	71601000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8752000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	37317000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-101354000	USD
CY2021	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	38984000	USD
CY2020	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	7310000	USD
CY2019	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	188028000	USD
CY2021	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	82363000	USD
CY2020	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-82178000	USD
CY2019	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-6310000	USD
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-36292000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	42395000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	17582000	USD
CY2021	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2020	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2019	us-gaap	Impairment Of Investments ImpairmentOfInvestments	267000	USD
CY2021	stwd	Non Credit Portion Of Other Than Temporary Impairment Losses Recognized In Other Comprehensive Income NonCreditPortionOfOtherThanTemporaryImpairmentLossesRecognizedInOtherComprehensiveIncome	0	USD
CY2020	stwd	Non Credit Portion Of Other Than Temporary Impairment Losses Recognized In Other Comprehensive Income NonCreditPortionOfOtherThanTemporaryImpairmentLossesRecognizedInOtherComprehensiveIncome	0	USD
CY2019	stwd	Non Credit Portion Of Other Than Temporary Impairment Losses Recognized In Other Comprehensive Income NonCreditPortionOfOtherThanTemporaryImpairmentLossesRecognizedInOtherComprehensiveIncome	-267000	USD
CY2021	stwd	Net Impairment Gains Losses Recognized In Earnings NetImpairmentGainsLossesRecognizedInEarnings	0	USD
CY2020	stwd	Net Impairment Gains Losses Recognized In Earnings NetImpairmentGainsLossesRecognizedInEarnings	0	USD
CY2019	stwd	Net Impairment Gains Losses Recognized In Earnings NetImpairmentGainsLossesRecognizedInEarnings	0	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7428000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3654000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-19270000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-7314000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	281000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-207000	USD
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	320064000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	214531000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	383572000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	501095000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	386278000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	550167000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8669000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20197000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13232000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	492426000	USD
CY2021	us-gaap	Nature Of Operations NatureOfOperations	Business and Organization<div style="margin-top:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Starwood Property Trust, Inc. (“STWD” and, together with its subsidiaries, “we” or the “Company”) is a Maryland corporation that commenced operations in August 2009, upon the completion of our initial public offering. We are focused primarily on originating, acquiring, financing and managing mortgage loans and other real estate investments in the United States (“U.S.”), Europe and Australia. As market conditions change over time, we may adjust our strategy to take advantage of changes in interest rates and credit spreads as well as economic and credit conditions.</span></div><div style="margin-top:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We have four reportable business segments as of December 31, 2021 and we refer to the investments within these segments as our target assets:</span></div><div style="margin-top:12pt;padding-left:54pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Real estate commercial and residential lending (the “Commercial and Residential Lending Segment”)—engages primarily in originating, acquiring, financing and managing commercial first mortgages, non-agency residential mortgages (“residential loans”), subordinated mortgages, mezzanine loans, preferred equity, commercial mortgage-backed securities (“CMBS”), residential mortgage-backed securities (“RMBS”) and other real estate and real estate-related debt investments in the U.S., Europe and Australia (including distressed or non-performing loans). Our residential loans are secured by a first mortgage lien on residential property and primarily consist of non-agency residential loans that are not guaranteed by any U.S. Government agency or federally chartered corporation.</span></div><div style="margin-top:12pt;padding-left:54pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Infrastructure lending (the “Infrastructure Lending Segment”)—engages primarily in originating, acquiring, financing and managing infrastructure debt investments.</span></div><div style="margin-top:12pt;padding-left:54pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Real estate property (the “Property Segment”)—engages primarily in acquiring and managing equity interests in stabilized commercial real estate properties, including multifamily properties and commercial properties subject to net leases, that are held for investment.</span></div><div style="margin-top:12pt;padding-left:54pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Real estate investing and servicing (the “Investing and Servicing Segment”)—includes (i) a servicing business in the U.S. that manages and works out problem assets, (ii) an investment business that selectively acquires and manages unrated, investment grade and non-investment grade rated CMBS, including subordinated interests of securitization and resecuritization transactions, (iii) a mortgage loan business which originates conduit loans for the primary purpose of selling these loans into securitization transactions and (iv) an investment business that selectively acquires commercial real estate assets, including properties acquired from CMBS trusts.</span></div><div style="margin-top:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Our segments exclude the consolidation of securitization variable interest entities (“VIEs”).</span></div><div style="margin-top:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We are organized and conduct our operations to qualify as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended (the “Code”). As such, we will generally not be subject to U.S. federal corporate income tax on that portion of our net income that is distributed to stockholders if we distribute at least 90% of our taxable income to our stockholders by prescribed dates and comply with various other requirements.</span></div><div style="margin-top:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We are organized as a holding company and conduct our business primarily through our various wholly-owned subsidiaries. We are externally managed and advised by SPT Management, LLC (our “Manager”) pursuant to the terms of a management agreement. Our Manager is controlled by Barry Sternlicht, our Chairman and Chief Executive Officer. Our Manager is an affiliate of Starwood Capital Group Global L.P., a privately-held private equity firm founded by Mr. Sternlicht.</span></div>
CY2020	us-gaap	Profit Loss ProfitLoss	366081000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	536935000	USD
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	44687000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	34392000	USD
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CY2021	us-gaap	Net Income Loss NetIncomeLoss	447739000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	331689000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	509664000	USD
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CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.16
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.79
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CY2020	us-gaap	Profit Loss ProfitLoss	366081000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	536935000	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-6939000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-2519000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	64000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-5209000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3040000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6939000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7728000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	489386000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	359142000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	529207000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	44687000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	34392000	USD
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	27271000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	444699000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	324750000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	501936000	USD
CY2018Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	0	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4900189000	USD
CY2019	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	767000	USD
CY2019	stwd	Redemption Of Units RedemptionOfUnits	0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	27000	USD
CY2019	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	67562000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	36155000	USD
CY2019	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	11915000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	536935000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.92
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	542385000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7728000	USD
CY2019	stwd	Noncontrolling Interests Increase Decrease From Variable Interest Entity NoncontrollingInterestsIncreaseDecreaseFromVariableInterestEntity	-2808000	USD
CY2019	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	186397000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	49958000	USD
CY2019Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	0	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5137014000	USD
CY2020	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	1098000	USD
CY2020	stwd	Redemption Of Units RedemptionOfUnits	-1309000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	95000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	33828000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	31241000	USD
CY2020	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	36046000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	366081000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.92
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	547417000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6939000	USD
CY2020	stwd	Noncontrolling Interests Increase Decrease From Variable Interest Entity NoncontrollingInterestsIncreaseDecreaseFromVariableInterestEntity	-2178000	USD
CY2020	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	13351000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	98203000	USD
CY2020Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	0	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4862576000	USD
CY2021	us-gaap	Equity Fair Value Adjustment EquityFairValueAdjustment	1236476000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	393120000	USD
CY2021	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	966000	USD
CY2021	stwd	Redemption Of Units RedemptionOfUnits	0	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	720000	USD
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	39287000	USD
CY2021	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	17040000	USD
CY2021	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	748000	USD
CY2021	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	491678000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.92
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	563595000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3040000	USD
CY2021	us-gaap	Temporary Equity Interest In Subsidiary Earnings TemporaryEquityInterestInSubsidiaryEarnings	214167000	USD
CY2021	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	5590000	USD
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	43950000	USD
CY2021Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	214915000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6433892000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	492426000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	366081000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	536935000	USD
CY2021	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	43199000	USD
CY2020	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	40131000	USD
CY2019	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	36088000	USD
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	7076000	USD
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	7939000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	7760000	USD
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	13513000	USD
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	12818000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	11791000	USD
CY2021	stwd	Accretion Of Net Deferred Loan Fees And Discounts AccretionOfNetDeferredLoanFeesAndDiscounts	57948000	USD
CY2020	stwd	Accretion Of Net Deferred Loan Fees And Discounts AccretionOfNetDeferredLoanFeesAndDiscounts	42199000	USD
CY2019	stwd	Accretion Of Net Deferred Loan Fees And Discounts AccretionOfNetDeferredLoanFeesAndDiscounts	35387000	USD
CY2021	stwd	Share Based Compensation And Nonemployee Services Transaction Expense ShareBasedCompensationAndNonemployeeServicesTransactionExpense	39287000	USD
CY2020	stwd	Share Based Compensation And Nonemployee Services Transaction Expense ShareBasedCompensationAndNonemployeeServicesTransactionExpense	31241000	USD
CY2019	stwd	Share Based Compensation And Nonemployee Services Transaction Expense ShareBasedCompensationAndNonemployeeServicesTransactionExpense	36155000	USD
CY2021	stwd	Incentive Fee Compensation IncentiveFeeCompensation	17040000	USD
CY2020	stwd	Incentive Fee Compensation IncentiveFeeCompensation	36046000	USD
CY2019	stwd	Incentive Fee Compensation IncentiveFeeCompensation	11915000	USD
CY2021	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	-387000	USD
CY2020	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	5393000	USD
CY2019	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	833000	USD
CY2021	stwd	Change In Fair Value Of Consolidated Variable Interest Entity ChangeInFairValueOfConsolidatedVariableInterestEntity	20070000	USD
CY2020	stwd	Change In Fair Value Of Consolidated Variable Interest Entity ChangeInFairValueOfConsolidatedVariableInterestEntity	-58160000	USD
CY2019	stwd	Change In Fair Value Of Consolidated Variable Interest Entity ChangeInFairValueOfConsolidatedVariableInterestEntity	67798000	USD
CY2021	stwd	Change In Fair Value Of Servicing Rights ChangeInFairValueOfServicingRights	3578000	USD
CY2020	stwd	Change In Fair Value Of Servicing Rights ChangeInFairValueOfServicingRights	-3715000	USD
CY2019	stwd	Change In Fair Value Of Servicing Rights ChangeInFairValueOfServicingRights	-3640000	USD
CY2021	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	69050000	USD
CY2020	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	133124000	USD
CY2019	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	71601000	USD
CY2021	stwd	Change In Fair Value Of Affordable Housing Fund Investments ChangeInFairValueOfAffordableHousingFundInvestments	402000	USD
CY2020	stwd	Change In Fair Value Of Affordable Housing Fund Investments ChangeInFairValueOfAffordableHousingFundInvestments	0	USD
CY2019	stwd	Change In Fair Value Of Affordable Housing Fund Investments ChangeInFairValueOfAffordableHousingFundInvestments	0	USD
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	90126000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-88544000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-11441000	USD
CY2021	stwd	Foreign Currency Transaction Gain Loss Before Tax Cash Flow Impact ForeignCurrencyTransactionGainLossBeforeTaxCashFlowImpact	-36292000	USD
CY2020	stwd	Foreign Currency Transaction Gain Loss Before Tax Cash Flow Impact ForeignCurrencyTransactionGainLossBeforeTaxCashFlowImpact	42395000	USD
CY2019	stwd	Foreign Currency Transaction Gain Loss Before Tax Cash Flow Impact ForeignCurrencyTransactionGainLossBeforeTaxCashFlowImpact	17582000	USD
CY2021	stwd	Percentage Of Annual Reit Taxable Income Distributable To Stockholders Minimum PercentageOfAnnualREITTaxableIncomeDistributableToStockholdersMinimum	0.90
CY2021	stwd	Gain On Sale Of Investments Cash Flow GainOnSaleOfInvestmentsCashFlow	38984000	USD
CY2020	stwd	Gain On Sale Of Investments Cash Flow GainOnSaleOfInvestmentsCashFlow	7310000	USD
CY2019	stwd	Gain On Sale Of Investments Cash Flow GainOnSaleOfInvestmentsCashFlow	188028000	USD
CY2021	stwd	Lease Intangibles And Other Assets Impairment Charges LeaseIntangiblesAndOtherAssetsImpairmentCharges	0	USD
CY2020	stwd	Lease Intangibles And Other Assets Impairment Charges LeaseIntangiblesAndOtherAssetsImpairmentCharges	0	USD
CY2019	stwd	Lease Intangibles And Other Assets Impairment Charges LeaseIntangiblesAndOtherAssetsImpairmentCharges	1494000	USD
CY2021	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	8335000	USD
CY2020	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	43153000	USD
CY2019	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	7126000	USD
CY2021	stwd	Depreciation And Amortization Excluding Amortization Of Above Below Market Leases DepreciationAndAmortizationExcludingAmortizationOfAboveBelowMarketLeases	84591000	USD
CY2020	stwd	Depreciation And Amortization Excluding Amortization Of Above Below Market Leases DepreciationAndAmortizationExcludingAmortizationOfAboveBelowMarketLeases	94154000	USD
CY2019	stwd	Depreciation And Amortization Excluding Amortization Of Above Below Market Leases DepreciationAndAmortizationExcludingAmortizationOfAboveBelowMarketLeases	113394000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8752000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	37317000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-101354000	USD
CY2021	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	4708000	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	2978000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	11631000	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7428000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3654000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-19270000	USD
CY2021	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	5172721000	USD
CY2020	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	2074678000	USD
CY2019	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	3543503000	USD
CY2021	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	3831712000	USD
CY2020	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	2802118000	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	3177640000	USD
CY2021	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	37201000	USD
CY2020	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	-1755000	USD
CY2019	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	-3118000	USD
CY2021	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	136772000	USD
CY2020	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	175287000	USD
CY2019	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	114156000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	28437000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-282000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	29787000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	40696000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	-372000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	-5458000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-989975000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1045548000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-13199000	USD
CY2021	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	8637213000	USD
CY2020	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	3133196000	USD
CY2019	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	5473399000	USD
CY2021	us-gaap	Proceeds From Loan And Lease Originations And Principal Collections1 ProceedsFromLoanAndLeaseOriginationsAndPrincipalCollections1	4024958000	USD
CY2020	us-gaap	Proceeds From Loan And Lease Originations And Principal Collections1 ProceedsFromLoanAndLeaseOriginationsAndPrincipalCollections1	1696244000	USD
CY2019	us-gaap	Proceeds From Loan And Lease Originations And Principal Collections1 ProceedsFromLoanAndLeaseOriginationsAndPrincipalCollections1	3132368000	USD
CY2021	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	344221000	USD
CY2020	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	504231000	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	1141411000	USD
CY2021	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	198358000	USD
CY2020	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	22408000	USD
CY2019	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	98258000	USD
CY2021	stwd	Proceeds From Sales Of Investment Securities ProceedsFromSalesOfInvestmentSecurities	0	USD
CY2020	stwd	Proceeds From Sales Of Investment Securities ProceedsFromSalesOfInvestmentSecurities	7940000	USD
CY2019	stwd	Proceeds From Sales Of Investment Securities ProceedsFromSalesOfInvestmentSecurities	7326000	USD
CY2021	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	87450000	USD
CY2020	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	83533000	USD
CY2019	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	205660000	USD
CY2021	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	98210000	USD
CY2020	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	24541000	USD
CY2019	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	343896000	USD
CY2021	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	26272000	USD
CY2020	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	25164000	USD
CY2019	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	30865000	USD
CY2021	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	1312000	USD
CY2020	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	3133000	USD
CY2019	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	18055000	USD
CY2021	stwd	Proceeds From Sale Of Interest In Unconsolidated Entities ProceedsFromSaleOfInterestInUnconsolidatedEntities	0	USD
CY2020	stwd	Proceeds From Sale Of Interest In Unconsolidated Entities ProceedsFromSaleOfInterestInUnconsolidatedEntities	10313000	USD
CY2019	stwd	Proceeds From Sale Of Interest In Unconsolidated Entities ProceedsFromSaleOfInterestInUnconsolidatedEntities	0	USD
CY2021	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	30448000	USD
CY2020	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	3422000	USD
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	18127000	USD
CY2021	stwd	Cash Reclassification Of Affordable Housing Fund Investees CashReclassificationOfAffordableHousingFundInvestees	28094000	USD
CY2020	stwd	Cash Reclassification Of Affordable Housing Fund Investees CashReclassificationOfAffordableHousingFundInvestees	0	USD
CY2019	stwd	Cash Reclassification Of Affordable Housing Fund Investees CashReclassificationOfAffordableHousingFundInvestees	0	USD
CY2021	stwd	Payments For Purchase Or Termination Of Derivatives PaymentsForPurchaseOrTerminationOfDerivatives	33902000	USD
CY2020	stwd	Payments For Purchase Or Termination Of Derivatives PaymentsForPurchaseOrTerminationOfDerivatives	74801000	USD
CY2019	stwd	Payments For Purchase Or Termination Of Derivatives PaymentsForPurchaseOrTerminationOfDerivatives	42835000	USD
CY2021	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	58210000	USD
CY2020	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	16673000	USD
CY2019	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	38756000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4281654000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-911805000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-775868000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	17436866000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	7100563000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	10167339000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	11929179000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	6137778000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	8671085000	USD
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	71858000	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	27122000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	72438000	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	394086000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1098000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	767000	USD
CY2021	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	720000	USD
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	95000	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	27000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	553930000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	546885000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	538424000	USD
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	219757000	USD
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	11775000	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	183520000	USD
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	43950000	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	99512000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	49958000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	33828000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2021	stwd	Proceeds From Issuance Of Debt Of Consolidated Variable Interest Entities ProceedsFromIssuanceOfDebtOfConsolidatedVariableInterestEntities	69398000	USD
CY2020	stwd	Proceeds From Issuance Of Debt Of Consolidated Variable Interest Entities ProceedsFromIssuanceOfDebtOfConsolidatedVariableInterestEntities	187494000	USD
CY2019	stwd	Proceeds From Issuance Of Debt Of Consolidated Variable Interest Entities ProceedsFromIssuanceOfDebtOfConsolidatedVariableInterestEntities	184540000	USD
CY2021	stwd	Repayments Of Debt Of Consolidated Variable Interest Entities RepaymentsOfDebtOfConsolidatedVariableInterestEntities	767427000	USD
CY2020	stwd	Repayments Of Debt Of Consolidated Variable Interest Entities RepaymentsOfDebtOfConsolidatedVariableInterestEntities	522348000	USD
CY2019	stwd	Repayments Of Debt Of Consolidated Variable Interest Entities RepaymentsOfDebtOfConsolidatedVariableInterestEntities	373155000	USD
CY2021	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	120060000	USD
CY2020	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	79921000	USD
CY2019	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	45642000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	4873103000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	13283000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	876721000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-398526000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	147026000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	87654000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	722162000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	574031000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	487865000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1722000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1105000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1488000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	321914000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	722162000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	574031000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	386918000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	379949000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	481483000	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	7793000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	11369000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	11284000	USD
CY2021	stwd	Dividendspayablecurrentandnoncurrentdividendsdeclaredduringperiod Dividendspayablecurrentandnoncurrentdividendsdeclaredduringperiod	148527000	USD
CY2020	stwd	Dividendspayablecurrentandnoncurrentdividendsdeclaredduringperiod Dividendspayablecurrentandnoncurrentdividendsdeclaredduringperiod	138075000	USD
CY2019	stwd	Dividendspayablecurrentandnoncurrentdividendsdeclaredduringperiod Dividendspayablecurrentandnoncurrentdividendsdeclaredduringperiod	136715000	USD
CY2021	stwd	Variable Interest Entity Consolidation In Non Cash Investing And Financing Activities VariableInterestEntityConsolidationInNonCashInvestingAndFinancingActivities	5332754000	USD
CY2020	stwd	Variable Interest Entity Consolidation In Non Cash Investing And Financing Activities VariableInterestEntityConsolidationInNonCashInvestingAndFinancingActivities	4665636000	USD
CY2019	stwd	Variable Interest Entity Consolidation In Non Cash Investing And Financing Activities VariableInterestEntityConsolidationInNonCashInvestingAndFinancingActivities	10368817000	USD
CY2021	stwd	Variable Interest Entity Deconsolidation In Non Cash Investing And Financing Activities VariableInterestEntityDeconsolidationInNonCashInvestingAndFinancingActivities	935855000	USD
CY2020	stwd	Variable Interest Entity Deconsolidation In Non Cash Investing And Financing Activities VariableInterestEntityDeconsolidationInNonCashInvestingAndFinancingActivities	32270000	USD
CY2019	stwd	Variable Interest Entity Deconsolidation In Non Cash Investing And Financing Activities VariableInterestEntityDeconsolidationInNonCashInvestingAndFinancingActivities	377071000	USD
CY2021	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	267557000	USD
CY2020	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	749995000	USD
CY2019	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	USD
CY2021	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	155548000	USD
CY2020	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	104327000	USD
CY2019	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	340948000	USD
CY2021	stwd	Transfer Of Loans From Variable Interest Entity Assets To Loans Held For Sale Upon Redemption Of Securities TransferOfLoansFromVariableInterestEntityAssetsToLoansHeldForSaleUponRedemptionOfSecurities	526679000	USD
CY2020	stwd	Transfer Of Loans From Variable Interest Entity Assets To Loans Held For Sale Upon Redemption Of Securities TransferOfLoansFromVariableInterestEntityAssetsToLoansHeldForSaleUponRedemptionOfSecurities	176614000	USD
CY2019	stwd	Transfer Of Loans From Variable Interest Entity Assets To Loans Held For Sale Upon Redemption Of Securities TransferOfLoansFromVariableInterestEntityAssetsToLoansHeldForSaleUponRedemptionOfSecurities	0	USD
CY2021	stwd	Loan Principal Collections Temporarily Held At Master Servicer LoanPrincipalCollectionsTemporarilyHeldAtMasterServicer	31681000	USD
CY2020	stwd	Loan Principal Collections Temporarily Held At Master Servicer LoanPrincipalCollectionsTemporarilyHeldAtMasterServicer	34601000	USD
CY2019	stwd	Loan Principal Collections Temporarily Held At Master Servicer LoanPrincipalCollectionsTemporarilyHeldAtMasterServicer	44426000	USD
CY2021	stwd	Net Assets Acquired Through Foreclosure NetAssetsAcquiredThroughForeclosure	36308000	USD
CY2020	stwd	Net Assets Acquired Through Foreclosure NetAssetsAcquiredThroughForeclosure	71488000	USD
CY2019	stwd	Net Assets Acquired Through Foreclosure NetAssetsAcquiredThroughForeclosure	53278000	USD
CY2021	stwd	Redemption Of Units For Common Stock Value RedemptionOfUnitsForCommonStockValue	17738000	USD
CY2020	stwd	Redemption Of Units For Common Stock Value RedemptionOfUnitsForCommonStockValue	8538000	USD
CY2019	stwd	Redemption Of Units For Common Stock Value RedemptionOfUnitsForCommonStockValue	21070000	USD
CY2021	stwd	Settlement Of Loans Transferred As Secured Borrowings SettlementOfLoansTransferredAsSecuredBorrowings	1430000	USD
CY2020	stwd	Settlement Of Loans Transferred As Secured Borrowings SettlementOfLoansTransferredAsSecuredBorrowings	0	USD
CY2019	stwd	Settlement Of Loans Transferred As Secured Borrowings SettlementOfLoansTransferredAsSecuredBorrowings	9626000	USD
CY2021	stwd	Variable Interest Entity Consolidation Fair Value Of Assets Acquired VariableInterestEntityConsolidationFairValueOfAssetsAcquired	0	USD
CY2020	stwd	Variable Interest Entity Consolidation Fair Value Of Assets Acquired VariableInterestEntityConsolidationFairValueOfAssetsAcquired	1576000	USD
CY2019	stwd	Variable Interest Entity Consolidation Fair Value Of Assets Acquired VariableInterestEntityConsolidationFairValueOfAssetsAcquired	2877000	USD
CY2021	stwd	Non Cash Real Estate Subsidiary Assets Sold NonCashRealEstateSubsidiaryAssetsSold	0	USD
CY2020	stwd	Non Cash Real Estate Subsidiary Assets Sold NonCashRealEstateSubsidiaryAssetsSold	0	USD
CY2019	stwd	Non Cash Real Estate Subsidiary Assets Sold NonCashRealEstateSubsidiaryAssetsSold	440966000	USD
CY2021	stwd	Non Cash Contributions From Noncontrolling Interests NonCashContributionsFromNoncontrollingInterests	0	USD
CY2020	stwd	Non Cash Contributions From Noncontrolling Interests NonCashContributionsFromNoncontrollingInterests	0	USD
CY2019	stwd	Non Cash Contributions From Noncontrolling Interests NonCashContributionsFromNoncontrollingInterests	360049000	USD
CY2021	stwd	Assets From Real Estate Business Sale Net Of Cash AssetsFromRealEstateBusinessSaleNetOfCash	0	USD
CY2020	stwd	Assets From Real Estate Business Sale Net Of Cash AssetsFromRealEstateBusinessSaleNetOfCash	0	USD
CY2019	stwd	Assets From Real Estate Business Sale Net Of Cash AssetsFromRealEstateBusinessSaleNetOfCash	75525000	USD
CY2021	stwd	Liabilities From Real Estate Business Sale LiabilitiesFromRealEstateBusinessSale	0	USD
CY2020	stwd	Liabilities From Real Estate Business Sale LiabilitiesFromRealEstateBusinessSale	0	USD
CY2019	stwd	Liabilities From Real Estate Business Sale LiabilitiesFromRealEstateBusinessSale	74692000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	8613000	USD
CY2021Q4	stwd	Permitted Reinvestment Under Static Investment In Variable Interest Entity PermittedReinvestmentUnderStaticInvestmentInVariableInterestEntity	0	USD
CY2021Q4	stwd	Mortgage Loans On Real Estate Gross Carrying Amount Of Mortgages MortgageLoansOnRealEstateGrossCarryingAmountOfMortgages	18480919000	USD
CY2021Q4	stwd	Number Of Properties In Portfolio Investment NumberOfPropertiesInPortfolioInvestment	59	property
CY2021Q4	stwd	Number Of Units In Portfolio Investment NumberOfUnitsInPortfolioInvestment	15057	unit
CY2021	us-gaap	Equity Fair Value Adjustment EquityFairValueAdjustment	1200000000	USD
CY2021Q4	stwd	Restricted Cash Funds Held In Escrow On Behalf Of Others RestrictedCashFundsHeldInEscrowOnBehalfOfOthers	3420000	USD
CY2020Q4	stwd	Restricted Cash Funds Held In Escrow On Behalf Of Others RestrictedCashFundsHeldInEscrowOnBehalfOfOthers	19517000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span><span style="font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"/></div><div style="margin-top:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of revenues and expenses during the reporting periods. The most significant and </span></div><div style="margin-top:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">subjective estimate that we make is the projection of cash flows we expect to receive on our investments, which has a significant impact on the amount of income that we record and/or disclose. In addition, the fair value of assets and liabilities that are estimated using a discounted cash flows method is significantly impacted by the rates at which we estimate market participants would discount the expected cash flows.</span></div><div style="margin-top:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We believe the estimates and assumptions underlying our consolidated financial statements are reasonable and supportable based on the information available as of December 31, 2021. However, uncertainty over the ultimate impact the COVID-19 pandemic, including variants and resurgences, will have on the global economy generally, and our business in particular, makes any estimates and assumptions as of December 31, 2021 inherently less certain than they would be absent the current and potential impacts of COVID-19. Actual results may ultimately differ from those estimates.</span><span style="font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"/></div>
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-bottom:12pt;margin-top:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Concentration of Credit Risk</span></div><div style="text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash investments, CMBS, RMBS, loan investments and interest receivable. We may place cash investments in excess of insured amounts with high quality financial institutions. We perform an ongoing analysis of credit risk concentrations in our investment portfolio by evaluating exposure to various counterparties, markets, underlying property types, contract terms, tenant mix and other credit metrics.</span></div>
CY2021Q4	stwd	Other Restricted Cash And Cash Equivalents OtherRestrictedCashAndCashEquivalents	41000	USD
CY2020Q4	stwd	Other Restricted Cash And Cash Equivalents OtherRestrictedCashAndCashEquivalents	7113000	USD
CY2021Q4	stwd	Derivative Collateral Restricted Cash DerivativeCollateralRestrictedCash	55032000	USD
CY2020Q4	stwd	Derivative Collateral Restricted Cash DerivativeCollateralRestrictedCash	89323000	USD
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	46059000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	42992000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	104552000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	158945000	USD
CY2021Q4	stwd	Mortgage Loans On Real Estate Principal Amount Of Mortgages MortgageLoansOnRealEstatePrincipalAmountOfMortgages	18521795000	USD
CY2021Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	18413649000	USD
CY2020Q4	stwd	Mortgage Loans On Real Estate Gross Carrying Amount Of Mortgages MortgageLoansOnRealEstateGrossCarryingAmountOfMortgages	12217352000	USD
CY2020Q4	stwd	Mortgage Loans On Real Estate Principal Amount Of Mortgages MortgageLoansOnRealEstatePrincipalAmountOfMortgages	12262840000	USD
CY2020Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	12139908000	USD
CY2021Q4	us-gaap	Loans Receivable With Variable Rates Of Interest1 LoansReceivableWithVariableRatesOfInterest1	15238959000	USD
CY2021Q4	us-gaap	Loans Receivable Basis Spread On Variable Rate LoansReceivableBasisSpreadOnVariableRate	0.041
CY2021Q4	stwd	Mortgage Loans On Real Estate Gross Carrying Amount Of Mortgages MortgageLoansOnRealEstateGrossCarryingAmountOfMortgages	18480919000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	67270000	USD
CY2020Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	12139908000	USD
CY2021	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	13990579000	USD
CY2021	stwd	Mortgage Loans On Real Estate Capitalized Interest MortgageLoansOnRealEstateCapitalizedInterest	119136000	USD
CY2021	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	4176868000	USD
CY2021	srt	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	4197809000	USD
CY2021	stwd	Mortgage Loans On Real Estate Discount Accretion And Premium Amortization MortgageLoansOnRealEstateDiscountAccretionAndPremiumAmortization	57948000	USD
CY2021	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	69050000	USD
CY2021	stwd	Mortgage Loans On Real Estate Unrealized Foreign Currency Remeasurement Gain Loss MortgageLoansOnRealEstateUnrealizedForeignCurrencyRemeasurementGainLoss	72130000	USD
CY2021	us-gaap	Allowance For Loan And Lease Losses Period Increase Decrease AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease	4633000	USD
CY2021	stwd	Mortgage Loans On Real Estate Loans Converted To Equity Interest During Period MortgageLoansOnRealEstateLoansConvertedToEquityInterestDuringPeriod	36308000	USD
CY2021	stwd	Mortgage Loans On Real Estate Transfers MortgageLoansOnRealEstateTransfers	524776000	USD
CY2021Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	18413649000	USD
CY2019Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	11470224000	USD
CY2020	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	5337399000	USD
CY2020	stwd	Mortgage Loans On Real Estate Capitalized Interest MortgageLoansOnRealEstateCapitalizedInterest	144013000	USD
CY2020	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	3307003000	USD
CY2020	srt	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	1821196000	USD
CY2020	stwd	Mortgage Loans On Real Estate Discount Accretion And Premium Amortization MortgageLoansOnRealEstateDiscountAccretionAndPremiumAmortization	42199000	USD
CY2020	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	133124000	USD
CY2020	stwd	Mortgage Loans On Real Estate Unrealized Foreign Currency Remeasurement Gain Loss MortgageLoansOnRealEstateUnrealizedForeignCurrencyRemeasurementGainLoss	-102553000	USD
CY2020	us-gaap	Allowance For Loan And Lease Losses Period Increase Decrease AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease	46091000	USD
CY2020	stwd	Mortgage Loans On Real Estate Transfers MortgageLoansOnRealEstateTransfers	105126000	USD
CY2020Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	12139908000	USD
CY2018Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	9794254000	USD
CY2019	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	9094714000	USD
CY2019	stwd	Mortgage Loans On Real Estate Capitalized Interest MortgageLoansOnRealEstateCapitalizedInterest	110632000	USD
CY2019	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	4311390000	USD
CY2019	srt	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	3304838000	USD
CY2019	stwd	Mortgage Loans On Real Estate Discount Accretion And Premium Amortization MortgageLoansOnRealEstateDiscountAccretionAndPremiumAmortization	35387000	USD
CY2019	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	71601000	USD
CY2019	stwd	Mortgage Loans On Real Estate Unrealized Foreign Currency Remeasurement Gain Loss MortgageLoansOnRealEstateUnrealizedForeignCurrencyRemeasurementGainLoss	-40155000	USD
CY2019	us-gaap	Allowance For Loan And Lease Losses Period Increase Decrease AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease	7126000	USD
CY2019	stwd	Mortgage Loans On Real Estate Write Off Of Capitalized Cost MortgageLoansOnRealEstateWriteOffOfCapitalizedCost	-27303000	USD
CY2019	stwd	Mortgage Loans On Real Estate Transfers MortgageLoansOnRealEstateTransfers	-25862000	USD
CY2019Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	11470224000	USD
CY2021	stwd	Mortgage Loans On Real Estate Transfers From Variable Interest Entities Trusts Redeemed MortgageLoansOnRealEstateTransfersFromVariableInterestEntitiesTrustsRedeemed	3	trust
CY2021Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	8610000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	5675000	USD
CY2021Q4	stwd	Investments Excluding Unconsolidated Entities InvestmentsExcludingUnconsolidatedEntities	860984000	USD
CY2020Q4	stwd	Investments Excluding Unconsolidated Entities InvestmentsExcludingUnconsolidatedEntities	736658000	USD
CY2021	stwd	Purchase Of Marketable Securities PurchaseOfMarketableSecurities	198358000	USD
CY2021	stwd	Sale Of Marketable Securities SaleOfMarketableSecurities	0	USD
CY2021Q4	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	0	USD
CY2021	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	87450000	USD
CY2021	stwd	Redemption Of Securities RedemptionOfSecurities	0	USD
CY2020	stwd	Purchase Of Marketable Securities PurchaseOfMarketableSecurities	22408000	USD
CY2020	stwd	Sale Of Marketable Securities SaleOfMarketableSecurities	7940000	USD
CY2020	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	83533000	USD
CY2020	stwd	Redemption Of Securities RedemptionOfSecurities	0	USD
CY2019	stwd	Purchase Of Marketable Securities PurchaseOfMarketableSecurities	98258000	USD
CY2019	stwd	Sale Of Marketable Securities SaleOfMarketableSecurities	7326000	USD
CY2019	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	205660000	USD
CY2021Q4	stwd	Available For Sale Securities Amortized Cost Before Other Than Temporary Impairment AvailableForSaleSecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	103027000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	103027000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	41052000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	99000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Accumulated Gross Unrealized Gain Loss Before Tax DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax	40953000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	143980000	USD
CY2020Q4	stwd	Available For Sale Securities Amortized Cost Before Other Than Temporary Impairment AvailableForSaleSecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	123292000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	123292000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	44123000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	66000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Accumulated Gross Unrealized Gain Loss Before Tax DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax	44057000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	167349000	USD
CY2021	stwd	Debt Securities Available For Sale Cost Of Third Party Management DebtSecuritiesAvailableForSaleCostOfThirdPartyManagement	900000	USD
CY2020	stwd	Debt Securities Available For Sale Cost Of Third Party Management DebtSecuritiesAvailableForSaleCostOfThirdPartyManagement	800000	USD
CY2019	stwd	Debt Securities Available For Sale Cost Of Third Party Management DebtSecuritiesAvailableForSaleCostOfThirdPartyManagement	1500000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	2478000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	99000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	438000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1195000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	25000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	41000	USD
CY2021Q4	stwd	Number Of Securities With Unrealized Losses NumberOfSecuritiesWithUnrealizedLosses	1	security
CY2020Q4	stwd	Number Of Securities With Unrealized Losses NumberOfSecuritiesWithUnrealizedLosses	2	security
CY2021Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	691746000	USD
CY2021Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	8610000	USD
CY2021Q4	stwd	Debt Securities Held To Maturity Net DebtSecuritiesHeldToMaturityNet	683136000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	1206000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	27478000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	656864000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	544280000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	5675000	USD
CY2020Q4	stwd	Debt Securities Held To Maturity Net DebtSecuritiesHeldToMaturityNet	538605000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	847000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	24199000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	515253000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	9503000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	5675000	USD
CY2021	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Purchased With Credit Deterioration Increase DebtSecuritiesHeldToMaturityAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	2935000	USD
CY2021Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	8610000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	404930000	USD
CY2021Q4	stwd	Held To Maturity Securities Debt Maturities After One Through Three Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughThreeYearsNetCarryingAmount	47877000	USD
CY2021Q4	stwd	Debt Securities Held To Maturity Amortized Cost Maturity Allocated And Single Maturity Date After Year Three Through Year Five DebtSecuritiesHeldToMaturityAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearThreeThroughYearFive	199213000	USD
CY2021Q4	stwd	Held To Maturity Securities Debt Maturities After Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveYearsNetCarryingAmount	31116000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	683136000	USD
CY2021Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	1347844000	USD
CY2020Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	2573296000	USD
CY2021Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	181457000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	302143000	USD
CY2021Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	1166387000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2271153000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	75549000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	64886000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	58806000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	53890000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	42118000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	202756000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	498005000	USD
CY2021Q4	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	402000	USD
CY2021Q4	us-gaap	Equity Method Investments EquityMethodInvestments	64316000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	62718000	USD
CY2021Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	25781000	USD
CY2020Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	45336000	USD
CY2021Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	90097000	USD
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	108054000	USD
CY2021Q4	stwd	Number Of Publicly Traded Investments NumberOfPubliclyTradedInvestments	0	Item
CY2021	stwd	Number Of Investments Impacted By Distributions NumberOfInvestmentsImpactedByDistributions	3	Investment
CY2021	stwd	Intangible Assets Sold IntangibleAssetsSold	-628000	USD
CY2021	stwd	Indefinite Lived Intangible Assets Adjustments For Change In Inputs And Assumptions IndefiniteLivedIntangibleAssetsAdjustmentsForChangeInInputsAndAssumptions	3578000	USD
CY2021Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	135238000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	71674000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	63564000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	170586000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	100469000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	70117000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	85700000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11698000	USD
CY2020	stwd	Intangible Assets Sold IntangibleAssetsSold	-170000	USD
CY2020	stwd	Indefinite Lived Intangible Assets Adjustments For Change In Inputs And Assumptions IndefiniteLivedIntangibleAssetsAdjustmentsForChangeInInputsAndAssumptions	-3715000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	70117000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	63564000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	7618000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	6043000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	4650000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	3775000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	2754000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	21944000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	46784000	USD
CY2021Q4	us-gaap	Off Market Lease Unfavorable OffMarketLeaseUnfavorable	1500000	USD
CY2020Q4	us-gaap	Off Market Lease Unfavorable OffMarketLeaseUnfavorable	1900000	USD
CY2021Q3	stwd	Debt Instrument Face Amount Purchased By Third Party Investors DebtInstrumentFaceAmountPurchasedByThirdPartyInvestors	210100000	USD
CY2021Q4	stwd	Debt Instrument Convertible Principal Amount For Conversion Ratio DebtInstrumentConvertiblePrincipalAmountForConversionRatio	1000	USD
CY2021Q4	us-gaap	Share Price SharePrice	24.30
CY2020Q4	us-gaap	Share Price SharePrice	19.30
CY2019Q4	us-gaap	Share Price SharePrice	24.86
CY2021Q4	us-gaap	Share Price SharePrice	24.30
CY2021Q4	us-gaap	Derivative Number Of Instruments Held DerivativeNumberOfInstrumentsHeld	464	contract
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	48216000	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	40555000	USD
CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	13421000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	41324000	USD
CY2021Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	13421000	USD
CY2021	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	82363000	USD
CY2020	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-82178000	USD
CY2019	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-6310000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	48216000	USD
CY2021Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	48216000	USD
CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	12870000	USD
CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	21290000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	14056000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	13421000	USD
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	12870000	USD
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	291000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	260000	USD
CY2021Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	9542034000	USD
CY2021Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	USD
CY2021Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	9542034000	USD
CY2021Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	9542034000	USD
CY2021Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	0	USD
CY2021Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	USD
CY2021Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross	9555455000	USD
CY2021Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	0	USD
CY2021Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoaned	9555455000	USD
CY2021Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Securities DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimSecurities	9554904000	USD
CY2021Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash	291000	USD
CY2021Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	260000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	40555000	USD
CY2020Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	40555000	USD
CY2020Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	6716000	USD
CY2020Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	33772000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	67000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	41324000	USD
CY2020Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	41324000	USD
CY2020Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	6716000	USD
CY2020Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	27416000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	7192000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	5808807000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	5808807000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	5808807000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	0	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	USD
CY2020Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross	5850131000	USD
CY2020Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	0	USD
CY2020Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoaned	5850131000	USD
CY2020Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Securities DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimSecurities	5815523000	USD
CY2020Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash	27416000	USD
CY2020Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	7192000	USD
CY2021	stwd	Number Of Collateralized Loan Obligations NumberOfCollateralizedLoanObligations	3	collateralizedLoanObligation
CY2021	stwd	Number Of Single Asset Single Borrower Loans NumberOfSingleAssetSingleBorrowerLoans	1	loans
CY2021	stwd	Incentive Fee Calculation Calendar Quarters Incentive Fee Paid IncentiveFeeCalculationCalendarQuartersIncentiveFeePaid	3	Q
CY2021	stwd	Related Party Number Of Trading Days Price Considered For Payment Of Incentive Fee In Shares RelatedPartyNumberOfTradingDaysPriceConsideredForPaymentOfIncentiveFeeInShares	5	D
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Shares Issued SharesIssued	16000000	shares
CY2021Q4	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	24.57
CY2021Q4	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	393120000	USD
CY2014Q2	stwd	Common Stock Shares Authorized Under Dividend Reinvestment Plan CommonStockSharesAuthorizedUnderDividendReinvestmentPlan	11000000	shares
CY2014Q2	stwd	Common Stock Value Authorized Under Atm Equity Offering Sales Agreement CommonStockValueAuthorizedUnderATMEquityOfferingSalesAgreement	500000000	USD
CY2019	stwd	Stock Issued During Period Shares Atm Equity Offering Sales Agreement StockIssuedDuringPeriodSharesATMEquityOfferingSalesAgreement	0	shares
CY2020	stwd	Stock Issued During Period Shares Atm Equity Offering Sales Agreement StockIssuedDuringPeriodSharesATMEquityOfferingSalesAgreement	0	shares
CY2021	stwd	Stock Issued During Period Shares Atm Equity Offering Sales Agreement StockIssuedDuringPeriodSharesATMEquityOfferingSalesAgreement	0	shares
CY2019	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	78000000	USD
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	2268551	shares
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	33800000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1708935	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	22.14
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	32400000	USD
CY2021Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2021Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2021Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2021Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2020Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2020Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	1756400	shares
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	74421000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	65734000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	46237000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	3881501	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	17.26
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	18.44
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	132029	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	18.99
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	3702007	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	18.90
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	22.14
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	14.64
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	24.01
CY2021Q4	stwd	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Future Vesting In First Full Fiscal Year ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFutureVestingInFirstFullFiscalYear	1492048	shares
CY2021Q4	stwd	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Future Vesting In Second Full Fiscal Year ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFutureVestingInSecondFullFiscalYear	901679	shares
CY2021Q4	stwd	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Future Vesting In Third Full Fiscal Year ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFutureVestingInThirdFullFiscalYear	1308280	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	3702007	shares
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	53500000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y8M12D
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	35700000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	33200000	USD
CY2021Q4	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	700000	USD
CY2021	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	447739000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	331689000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	509664000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	6808000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	5216000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	3873000	USD
CY2021	stwd	Income Loss From Continuing Operations Basic IncomeLossFromContinuingOperationsBasic	440931000	USD
CY2020	stwd	Income Loss From Continuing Operations Basic IncomeLossFromContinuingOperationsBasic	326473000	USD
CY2019	stwd	Income Loss From Continuing Operations Basic IncomeLossFromContinuingOperationsBasic	505791000	USD
CY2021	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	447739000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	331689000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	509664000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	6808000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	5216000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	3873000	USD
CY2021	stwd	Income Loss From Continuing Operations Diluted IncomeLossFromContinuingOperationsDiluted	452550000	USD
CY2020	stwd	Income Loss From Continuing Operations Diluted IncomeLossFromContinuingOperationsDiluted	326473000	USD
CY2019	stwd	Income Loss From Continuing Operations Diluted IncomeLossFromContinuingOperationsDiluted	518145000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	285942000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	281978000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	279337000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1037000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	383000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	360000	shares
CY2021	stwd	Incremental Common Shares Attributable To Non Participating Nonvested Shares IncrementalCommonSharesAttributableToNonParticipatingNonvestedShares	198000	shares
CY2020	stwd	Incremental Common Shares Attributable To Non Participating Nonvested Shares IncrementalCommonSharesAttributableToNonParticipatingNonvestedShares	122000	shares
CY2019	stwd	Incremental Common Shares Attributable To Non Participating Nonvested Shares IncrementalCommonSharesAttributableToNonParticipatingNonvestedShares	210000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	296826000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	282483000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	289712000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.54
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.16
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.81
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.52
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.16
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.79
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-6125000	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	1603000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-7728000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-6939000	USD
CY2020	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	0	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	8213000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6939000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-3101000	USD
CY2021	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-61000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3040000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	142000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	5690000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4917000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-80000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3201000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3182000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-392000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	195000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	977000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-330000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	9086000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	9076000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	6893000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	3869000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2106000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2898000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	287000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8999000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11111000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4156000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8669000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20197000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13232000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	3155000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	4571000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	-9652000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	-1672000	USD
CY2021Q4	stwd	Deferred Tax Assets Lease Assets DeferredTaxAssetsLeaseAssets	0	USD
CY2020Q4	stwd	Deferred Tax Assets Lease Assets DeferredTaxAssetsLeaseAssets	310000	USD
CY2021Q4	stwd	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	0	USD
CY2020Q4	stwd	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	579000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	1515000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	1236000	USD
CY2021Q4	stwd	Deferred Tax Assets Net Operating And Capital Loss Carryforwards DeferredTaxAssetsNetOperatingAndCapitalLossCarryforwards	1908000	USD
CY2020Q4	stwd	Deferred Tax Assets Net Operating And Capital Loss Carryforwards DeferredTaxAssetsNetOperatingAndCapitalLossCarryforwards	974000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	14000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6090000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	2908000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	900000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	0	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	0	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	105230000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	81118000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	115535000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	92121000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.184
CY2020	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	58265000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.151
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	106301000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.193
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4307000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.009
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	7509000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.019
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3034000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.005
CY2021	stwd	Income Tax Reconciliation Federal Benefit Of State Tax Deduction IncomeTaxReconciliationFederalBenefitOfStateTaxDeduction	-905000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.002
CY2020	stwd	Income Tax Reconciliation Federal Benefit Of State Tax Deduction IncomeTaxReconciliationFederalBenefitOfStateTaxDeduction	-1577000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.004
CY2019	stwd	Income Tax Reconciliation Federal Benefit Of State Tax Deduction IncomeTaxReconciliationFederalBenefitOfStateTaxDeduction	-637000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.001
CY2021	stwd	Income Tax Reconciliation Net Operating Loss Carryback Rate Differential IncomeTaxReconciliationNetOperatingLossCarrybackRateDifferential	0	USD
CY2021	stwd	Effective Income Tax Rate Net Operating Loss Carryback Rate Differential EffectiveIncomeTaxRateNetOperatingLossCarrybackRateDifferential	0
CY2020	stwd	Income Tax Reconciliation Net Operating Loss Carryback Rate Differential IncomeTaxReconciliationNetOperatingLossCarrybackRateDifferential	-3387000	USD
CY2020	stwd	Effective Income Tax Rate Net Operating Loss Carryback Rate Differential EffectiveIncomeTaxRateNetOperatingLossCarrybackRateDifferential	-0.009
CY2019	stwd	Income Tax Reconciliation Net Operating Loss Carryback Rate Differential IncomeTaxReconciliationNetOperatingLossCarrybackRateDifferential	0	USD
CY2019	stwd	Effective Income Tax Rate Net Operating Loss Carryback Rate Differential EffectiveIncomeTaxRateNetOperatingLossCarrybackRateDifferential	0
CY2021	stwd	Income Tax Reconciliation Intra Entity Transfer IncomeTaxReconciliationIntraEntityTransfer	6635000	USD
CY2021	stwd	Effective Income Tax Rate Reconciliation Intra Entity Transfer EffectiveIncomeTaxRateReconciliationIntraEntityTransfer	-0.013
CY2020	stwd	Income Tax Reconciliation Intra Entity Transfer IncomeTaxReconciliationIntraEntityTransfer	5385000	USD
CY2020	stwd	Effective Income Tax Rate Reconciliation Intra Entity Transfer EffectiveIncomeTaxRateReconciliationIntraEntityTransfer	-0.014
CY2019	stwd	Income Tax Reconciliation Intra Entity Transfer IncomeTaxReconciliationIntraEntityTransfer	0	USD
CY2019	stwd	Effective Income Tax Rate Reconciliation Intra Entity Transfer EffectiveIncomeTaxRateReconciliationIntraEntityTransfer	0
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1207000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	184000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.001
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1601000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8669000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.017
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20197000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.052
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13232000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.024
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	4100000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	5571000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	5634000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2227000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	42000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	115000	USD
CY2021	us-gaap	Sublease Income SubleaseIncome	766000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	1509000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	1613000	USD
CY2021	us-gaap	Lease Cost LeaseCost	5560000	USD
CY2020	us-gaap	Lease Cost LeaseCost	4104000	USD
CY2019	us-gaap	Lease Cost LeaseCost	4136000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	1274000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	6268000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.040
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.041
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	1605000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1624000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1643000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1713000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1559000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	3085000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	11227000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1466000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	9761000	USD
CY2021	us-gaap	Interest And Fee Income Loans Commercial InterestAndFeeIncomeLoansCommercial	800291000	USD
CY2021	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	45168000	USD
CY2021	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	38739000	USD
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	278831000	USD
CY2021	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	7059000	USD
CY2021	us-gaap	Revenues Revenues	1170088000	USD
CY2021	stwd	Management Fees ManagementFees	167773000	USD
CY2021	us-gaap	Interest Expense InterestExpense	445087000	USD
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	171302000	USD
CY2021	stwd	Acquisition And Investment Pursuit Costs AcquisitionAndInvestmentPursuitCosts	1184000	USD
CY2021	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	111667000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	83001000	USD
CY2021	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	8335000	USD
CY2021	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-708000	USD
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	989057000	USD
CY2021	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	162333000	USD
CY2021	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	3578000	USD
CY2021	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	-387000	USD
CY2021	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	69050000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8752000	USD
CY2021	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	38984000	USD
CY2021	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	82363000	USD
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-36292000	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7428000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-7314000	USD
CY2021	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Contingent Consideration Issued SECSchedule1228RealEstateCompaniesInvestmentInRealEstateContingentConsiderationIssued	0	USD
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	320064000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	501095000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8669000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	492426000	USD
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	44687000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	447739000	USD
CY2020	us-gaap	Interest And Fee Income Loans Commercial InterestAndFeeIncomeLoansCommercial	751943000	USD
CY2020	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	54412000	USD
CY2020	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	29634000	USD
CY2020	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	297828000	USD
CY2020	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2338000	USD
CY2020	us-gaap	Revenues Revenues	1136155000	USD
CY2020	stwd	Management Fees ManagementFees	127127000	USD
CY2020	us-gaap	Interest Expense InterestExpense	419763000	USD
CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	157874000	USD
CY2020	stwd	Acquisition And Investment Pursuit Costs AcquisitionAndInvestmentPursuitCosts	3572000	USD
CY2020	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	117676000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	94405000	USD
CY2020	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	43153000	USD
CY2020	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-838000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	964408000	USD
CY2020	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	78258000	USD
CY2020	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	-3715000	USD
CY2020	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	5393000	USD
CY2020	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	133124000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	37317000	USD
CY2020	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	7310000	USD
CY2020	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-82178000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	42395000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3654000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	281000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	214531000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	386278000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20197000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	366081000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	34392000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	331689000	USD
CY2019	us-gaap	Interest And Fee Income Loans Commercial InterestAndFeeIncomeLoansCommercial	724013000	USD
CY2019	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	76629000	USD
CY2019	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	54296000	USD
CY2019	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	337966000	USD
CY2019	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3515000	USD
CY2019	us-gaap	Revenues Revenues	1196419000	USD
CY2019	stwd	Management Fees ManagementFees	119132000	USD
CY2019	us-gaap	Interest Expense InterestExpense	508729000	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	155112000	USD
CY2019	stwd	Acquisition And Investment Pursuit Costs AcquisitionAndInvestmentPursuitCosts	1056000	USD
CY2019	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	122982000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	113322000	USD
CY2019	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	7126000	USD
CY2019	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-2365000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	1029824000	USD
CY2019	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	236309000	USD
CY2019	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	-3640000	USD
CY2019	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	833000	USD
CY2019	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	71601000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-101354000	USD
CY2019	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	188028000	USD
CY2019	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-6310000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	17582000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-19270000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-207000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	383572000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	550167000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13232000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	536935000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	27271000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	509664000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	217362000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	104552000	USD
CY2021Q4	us-gaap	Notes Receivable Net NotesReceivableNet	15536849000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	2876800000	USD
CY2021Q4	stwd	Investments Excluding Unconsolidated Entities InvestmentsExcludingUnconsolidatedEntities	860984000	USD
CY2021Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	1166387000	USD
CY2021Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	90097000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	259846000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	63564000	USD
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	48216000	USD
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	116262000	USD
CY2021Q4	us-gaap	Other Assets OtherAssets	188626000	USD
CY2021Q4	stwd	Variable Interest Entity Assets VariableInterestEntityAssets	61280543000	USD
CY2021Q4	us-gaap	Assets Assets	83850397000	USD
CY2021Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	189696000	USD
CY2021Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	76371000	USD
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	147624000	USD
CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	13421000	USD
CY2021Q4	us-gaap	Secured Debt SecuredDebt	12576850000	USD
CY2021Q4	us-gaap	Collateralized Financings CollateralizedFinancings	2616116000	USD
CY2021Q4	us-gaap	Unsecured Debt UnsecuredDebt	1828590000	USD
CY2021Q4	stwd	Variable Interest Entity Liabilities VariableInterestEntityLiabilities	59752922000	USD
CY2021Q4	us-gaap	Liabilities Liabilities	77201590000	USD
CY2021Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	214915000	USD
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	3123000	USD
CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	5673376000	USD
CY2021Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	138022000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	40953000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	493106000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	6072536000	USD
CY2021Q4	us-gaap	Minority Interest MinorityInterest	361356000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6433892000	USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	83850397000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	563217000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	158945000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	11087073000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1052835000	USD
CY2020Q4	stwd	Investments Excluding Unconsolidated Entities InvestmentsExcludingUnconsolidatedEntities	736658000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2271153000	USD
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	108054000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	259846000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	70117000	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	40555000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	95980000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	190748000	USD
CY2020Q4	stwd	Variable Interest Entity Assets VariableInterestEntityAssets	64238328000	USD
CY2020Q4	us-gaap	Assets Assets	80873509000	USD
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	206845000	USD
CY2020Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	39170000	USD
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	137959000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	41324000	USD
CY2020Q4	us-gaap	Secured Debt SecuredDebt	10146190000	USD
CY2020Q4	us-gaap	Collateralized Financings CollateralizedFinancings	930554000	USD
CY2020Q4	us-gaap	Unsecured Debt UnsecuredDebt	1732520000	USD
CY2020Q4	stwd	Variable Interest Entity Liabilities VariableInterestEntityLiabilities	62776371000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	76010933000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	2921000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	5209739000	USD
CY2020Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	138022000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	43993000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-629733000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	4488898000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	373678000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4862576000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	80873509000	USD
CY2021Q4	srt	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	985015000	USD
CY2021Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	185449000	USD
CY2021Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1115907000	USD
CY2021Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements	46488000	USD
CY2021Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	185449000	USD
CY2021Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	1162395000	USD
CY2021Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	1347844000	USD
CY2021Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	181457000	USD
CY2021Q4	us-gaap	Sec Schedule Iii Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Land SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLand	0	USD
CY2021Q4	srt	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	1500000000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2573296000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2490630000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2972803000	USD
CY2021	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	0	USD
CY2020	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	0	USD
CY2019	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	8472000	USD
CY2021	us-gaap	Real Estate Acquisitions Through Foreclosures RealEstateAcquisitionsThroughForeclosures	28843000	USD
CY2020	us-gaap	Real Estate Acquisitions Through Foreclosures RealEstateAcquisitionsThroughForeclosures	75245000	USD
CY2019	us-gaap	Real Estate Acquisitions Through Foreclosures RealEstateAcquisitionsThroughForeclosures	27416000	USD
CY2021	us-gaap	Real Estate Improvements RealEstateImprovements	24390000	USD
CY2020	us-gaap	Real Estate Improvements RealEstateImprovements	25164000	USD
CY2019	us-gaap	Real Estate Improvements RealEstateImprovements	30865000	USD
CY2020	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Contingent Consideration Issued SECSchedule1228RealEstateCompaniesInvestmentInRealEstateContingentConsiderationIssued	1576000	USD
CY2019	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Contingent Consideration Issued SECSchedule1228RealEstateCompaniesInvestmentInRealEstateContingentConsiderationIssued	2877000	USD
CY2021	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Additions SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAdditions	53233000	USD
CY2020	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Additions SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAdditions	101985000	USD
CY2019	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Additions SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAdditions	69630000	USD
CY2021	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	55945000	USD
CY2020	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	19319000	USD
CY2019	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	535417000	USD
CY2021	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Reclassification SECSchedule1228RealEstateCompaniesInvestmentInRealEstateReclassification	1222740000	USD
CY2020	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Reclassification SECSchedule1228RealEstateCompaniesInvestmentInRealEstateReclassification	0	USD
CY2019	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Reclassification SECSchedule1228RealEstateCompaniesInvestmentInRealEstateReclassification	0	USD
CY2021	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Foreign Currency Translation SECSchedule1228RealEstateCompaniesInvestmentInRealEstateForeignCurrencyTranslation	0	USD
CY2020	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Foreign Currency Translation SECSchedule1228RealEstateCompaniesInvestmentInRealEstateForeignCurrencyTranslation	0	USD
CY2019	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Foreign Currency Translation SECSchedule1228RealEstateCompaniesInvestmentInRealEstateForeignCurrencyTranslation	15702000	USD
CY2021	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	0	USD
CY2020	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	0	USD
CY2019	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	684000	USD
CY2021	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Deductions SECSchedule1228RealEstateCompaniesInvestmentInRealEstateDeductions	1278685000	USD
CY2020	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Deductions SECSchedule1228RealEstateCompaniesInvestmentInRealEstateDeductions	19319000	USD
CY2019	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Deductions SECSchedule1228RealEstateCompaniesInvestmentInRealEstateDeductions	551803000	USD
CY2021Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	1347844000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2573296000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2490630000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	302143000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	224190000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	187913000	USD
CY2021	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	72299000	USD
CY2020	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	81610000	USD
CY2019	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	92024000	USD
CY2021	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Accumulated Depreciation Reclassification SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationReclassification	186716000	USD
CY2020	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Accumulated Depreciation Reclassification SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationReclassification	0	USD
CY2019	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Accumulated Depreciation Reclassification SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationReclassification	0	USD
CY2021	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	6269000	USD
CY2020	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	3657000	USD
CY2019	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	54260000	USD
CY2021	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Accumulated Depreciation Foreign Currency Translation SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationForeignCurrencyTranslation	0	USD
CY2020	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Accumulated Depreciation Foreign Currency Translation SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationForeignCurrencyTranslation	0	USD
CY2019	stwd	Sec Schedule1228 Real Estate Companies Investment In Real Estate Accumulated Depreciation Foreign Currency Translation SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationForeignCurrencyTranslation	1487000	USD
CY2021Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	181457000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	302143000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	224190000	USD
CY2021Q4	srt	Mortgage Loans On Real Estate Principal Amount Of Delinquent Loans MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoans	462880000	USD
CY2021Q4	stwd	Mortgage Loans On Real Estate Federal Income Tax Basis MortgageLoansOnRealEstateFederalIncomeTaxBasis	16400000000	USD

Files In Submission

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0001628280-22-003917-index-headers.html	Edgar Link	pending
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0001628280-22-003917.txt	Edgar Link	pending
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$STWD
STARWOOD PROPERTY TRUST, INC. Stock $stwd

2022 Q1 Form 10-K Financial Statement

#000162828022003917 Filed on February 25, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STWD STARWOOD PROPERTY TRUST, INC. Stock $stwd

2022 Q1 Form 10-K Financial Statement

#000162828022003917 Filed on February 25, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STWD
STARWOOD PROPERTY TRUST, INC. Stock $stwd