$STWD
STARWOOD PROPERTY TRUST, INC. Stock $stwd

$stwd Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-Q Financial Statement

#000162828021022382 Filed on November 09, 2021

Income Statement

Concept	2021 Q4	2021 Q3	2020 Q3
Revenue	$296.1M	$302.3M	$267.4M
YoY Change	1.92%	13.03%	-7.25%
Cost Of Revenue	$192.6M	$139.3M	$119.1M
YoY Change	35.25%	16.93%	-22.36%
Gross Profit	$103.5M	$163.0M	$148.3M
YoY Change	-30.09%	9.93%	9.93%
Gross Profit Margin	34.96%	53.93%	55.45%
Selling, General & Admin	$69.21M	$70.38M	$69.00M
YoY Change	-10.46%	2.0%	-3.23%
% of Gross Profit	66.85%	43.17%	46.53%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$16.94M	$22.52M	$23.50M
YoY Change	-28.23%	-4.17%	-18.4%
% of Gross Profit	16.36%	13.81%	15.85%
Operating Expenses	$105.9M	$91.88M	$89.20M
YoY Change	19.28%	3.01%	-10.44%
Operating Profit	-$2.378M	$71.15M	$59.10M
YoY Change	-104.01%	20.38%	67.42%
Interest Expense	$114.2M	$115.5M	$95.98M
YoY Change	61.76%	20.37%	-22.07%
% of Operating Profit		162.38%	162.4%
Other Income/Expense, Net	-$898.0K	$77.06M	$121.3M
YoY Change	124.5%	-36.48%	1.57%
Pretax Income	$105.3M	$148.0M	$179.6M
YoY Change	-17.72%	-17.59%	16.22%
Income Tax	$2.291M	$7.501M	$14.84M
% Of Pretax Income	2.18%	5.07%	8.27%
Net Earnings	$91.45M	$128.6M	$151.8M
YoY Change	-14.51%	-15.3%	8.15%
Net Earnings / Revenue	30.88%	42.54%	56.78%
Basic Earnings Per Share		$0.44	$0.53
Diluted Earnings Per Share	$300.7K	$0.44	$0.52
COMMON SHARES
Basic Shares Outstanding	288.6M shares	288.3M shares	284.5M
Diluted Shares Outstanding		295.4M shares	292.5M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$217.4M	$273.3M	$1.125B
YoY Change	-83.28%	-75.7%	2.9%
Cash & Equivalents	$217.4M	$273.3M	$379.9M
Short-Term Investments			$745.1M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$333.6M	$381.4M	$458.0M
YoY Change	-49.37%	-16.72%	36.31%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.207B	$2.229B	$2.208B
YoY Change	-2.83%	0.94%	-19.12%
Goodwill	$259.8M	$259.8M	$259.8M
YoY Change	0.0%	0.0%	0.0%
Intangibles	$63.56M	$65.12M	$74.14M
YoY Change	-9.35%	-12.16%	-38.19%
Long-Term Investments	$64.32M	$61.83M	$58.52M
YoY Change	2.55%	5.65%	-42.12%
Other Assets	$104.6M	$110.5M	$131.0M
YoY Change	-34.24%	-15.67%	18.02%
Total Long-Term Assets	$83.52B	$81.60B	$80.16B
YoY Change	4.12%	1.8%	8.18%
TOTAL ASSETS
Total Short-Term Assets	$333.6M	$381.4M	$458.0M
Total Long-Term Assets	$83.52B	$81.60B	$80.16B
Total Assets	$83.85B	$81.98B	$80.62B
YoY Change	3.68%	1.69%	8.31%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$189.7M	$210.1M	$201.0M
YoY Change	-8.36%	4.52%	-14.1%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$2.068B	$273.6M	$80.00M
YoY Change	214.81%	241.98%	50.94%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$2.482B	$646.8M	$441.0M
YoY Change	138.42%	46.66%	-1.78%
LONG-TERM LIABILITIES
Long-Term Debt	$14.95B	$15.58B	$12.40B
YoY Change	23.04%	25.62%	12.23%
Other Long-Term Liabilities	$59.77B	$60.91B	$62.89B
YoY Change	-4.86%	-3.15%	8.39%
Total Long-Term Liabilities	$74.72B	$76.49B	$75.29B
YoY Change	-0.34%	1.59%	9.0%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.482B	$646.8M	$441.0M
Total Long-Term Liabilities	$74.72B	$76.49B	$75.29B
Total Liabilities	$77.20B	$77.13B	$75.73B
YoY Change	1.57%	1.85%	8.93%
SHAREHOLDERS EQUITY
Retained Earnings	$493.1M	-$688.0M	-$599.0M
YoY Change	-178.3%	14.85%	43.47%
Common Stock	$5.676B	$5.273B	$5.204B
YoY Change	8.9%	1.34%	1.54%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.073B	$4.488B	$4.514B
YoY Change
Total Liabilities & Shareholders Equity	$83.85B	$81.98B	$80.62B
YoY Change	3.68%	1.69%	8.31%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2020 Q3
OPERATING ACTIVITIES
Net Income	$91.45M	$128.6M	$151.8M
YoY Change	-14.51%	-15.3%	8.15%
Depreciation, Depletion And Amortization	$16.94M	$22.52M	$23.50M
YoY Change	-28.23%	-4.17%	-18.4%
Cash From Operating Activities	-$528.2M	-$749.7M	-$243.6M
YoY Change	-201.7%	207.78%	180.32%
INVESTING ACTIVITIES
Capital Expenditures	-$28.09M
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$2.236B	-$651.7M	-$329.2M
YoY Change	554.22%	97.96%	-266.85%
Cash From Investing Activities	-$2.264B	-$651.7M	-$329.2M
YoY Change	562.44%	97.96%	-266.85%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$393.1M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	2.731B	1.425B	559.5M
YoY Change	8124.43%	154.65%	-343.37%
NET CHANGE
Cash From Operating Activities	-528.2M	-749.7M	-243.6M
Cash From Investing Activities	-2.264B	-651.7M	-329.2M
Cash From Financing Activities	2.731B	1.425B	559.5M
Net Change In Cash	-61.94M	23.31M	-13.30M
YoY Change	-129.38%	-275.3%	-88.87%
FREE CASH FLOW
Cash From Operating Activities	-$528.2M	-$749.7M	-$243.6M
Capital Expenditures	-$28.09M
Free Cash Flow	-$500.1M
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001465128
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
CY2019	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201613Member
CY2020	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	stwd:AccountingStandardsUpdate202006Member
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-34436
	dei	Entity Registrant Name EntityRegistrantName	Starwood Property Trust, Inc.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	27-0247747
	dei	Entity Address Address Line1 EntityAddressAddressLine1	591 West Putnam Avenue
	dei	Entity Address City Or Town EntityAddressCityOrTown	Greenwich
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CT
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	06830
	dei	City Area Code CityAreaCode	203
	dei	Local Phone Number LocalPhoneNumber	422-7700
	dei	Security12b Title Security12bTitle	Common stock, $0.01 par value per share
	dei	Trading Symbol TradingSymbol	STWD
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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CY2020Q3	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	-3587000	USD
	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	-12363000	USD
	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	55284000	USD
CY2021Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-23000	USD
CY2020Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-172000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-708000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-662000	USD
CY2021Q3	us-gaap	Costs And Expenses CostsAndExpenses	231353000	USD
CY2020Q3	us-gaap	Costs And Expenses CostsAndExpenses	209158000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	690171000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	733005000	USD
CY2021Q3	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	28049000	USD
CY2020Q3	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	58585000	USD
	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	80303000	USD
	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	64353000	USD
CY2021Q3	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	2237000	USD
CY2020Q3	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	634000	USD
	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	2740000	USD
	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	-2328000	USD
CY2021Q3	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	-299000	USD
CY2020Q3	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	-199000	USD
	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	903000	USD
	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	3132000	USD
CY2021Q3	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	31727000	USD
CY2020Q3	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	61384000	USD
	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	68116000	USD
	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	79700000	USD
CY2021Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2042000	USD
CY2020Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3192000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	6002000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	32065000	USD
CY2021Q3	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	-47000	USD
CY2020Q3	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	0	USD
	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	26377000	USD
	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	6768000	USD
CY2021Q3	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	41812000	USD
CY2020Q3	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-28097000	USD
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	65792000	USD
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-34485000	USD
CY2021Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-27003000	USD
CY2020Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	25452000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-36057000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1861000	USD
	stwd	Debt Securities Available For Sale Cost Of Third Party Management DebtSecuritiesAvailableForSaleCostOfThirdPartyManagement	900000	USD
CY2021Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-499000	USD
CY2020Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2197000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2377000	USD
CY2021Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-964000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	357000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-6416000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	687000	USD
CY2021Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	77055000	USD
CY2020Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	121308000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	205563000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	145654000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	147988000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	179577000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	395775000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	258242000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7501000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14843000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6378000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6816000	USD
CY2021Q3	us-gaap	Profit Loss ProfitLoss	140487000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	164734000	USD
	us-gaap	Profit Loss ProfitLoss	389397000	USD
	us-gaap	Profit Loss ProfitLoss	251426000	USD
CY2021Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	11885000	USD
CY2020Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12900000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	33107000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	26705000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	128602000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	151834000	USD
	us-gaap	Net Income Loss NetIncomeLoss	356290000	USD
	us-gaap	Net Income Loss NetIncomeLoss	224721000	USD
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.44
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.23
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.44
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.22
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.79
CY2021Q3	us-gaap	Profit Loss ProfitLoss	140487000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	164734000	USD
	us-gaap	Profit Loss ProfitLoss	389397000	USD
	us-gaap	Profit Loss ProfitLoss	251426000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-824000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-581000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-3571000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-8647000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	64000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	0	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-824000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-581000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3507000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-8647000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	139663000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	164153000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	385890000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	242779000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	11885000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	12900000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	33107000	USD
	stwd	Debt Securities Available For Sale Cost Of Third Party Management DebtSecuritiesAvailableForSaleCostOfThirdPartyManagement	1000000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	26705000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	127778000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	151253000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	352783000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	216074000	USD
CY2021Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4851700000	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	209000	USD
CY2021Q3	stwd	Redemption Of Units RedemptionOfUnits	0	USD
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	5000	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	9452000	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	2506000	USD
CY2021Q3	us-gaap	Profit Loss ProfitLoss	140487000	USD
CY2021Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2021Q3	us-gaap	Dividends Common Stock DividendsCommonStock	139207000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-824000	USD
CY2021Q3	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	52000	USD
CY2021Q3	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	17258000	USD
CY2021Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4847112000	USD
CY2020Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4864796000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	521000	USD
CY2020Q3	stwd	Redemption Of Units RedemptionOfUnits	-1285000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	54000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	6261000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	164734000	USD
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2020Q3	us-gaap	Dividends Common Stock DividendsCommonStock	136755000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-581000	USD
CY2020Q3	stwd	Noncontrolling Interests Increase Decrease From Variable Interest Entity NoncontrollingInterestsIncreaseDecreaseFromVariableInterestEntity	12000	USD
CY2020Q3	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	251000	USD
CY2020Q3	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	12207000	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4885693000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4862576000	USD
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	697000	USD
	stwd	Redemption Of Units RedemptionOfUnits	0	USD
	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	27000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	29359000	USD
	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	16554000	USD
	us-gaap	Profit Loss ProfitLoss	389397000	USD
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
	us-gaap	Dividends Common Stock DividendsCommonStock	416756000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3507000	USD
	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	5590000	USD
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	35235000	USD
CY2021Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4847112000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5137014000	USD
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	890000	USD
	stwd	Redemption Of Units RedemptionOfUnits	-1285000	USD
	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	69000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	28830000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	22405000	USD
	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	36046000	USD
	us-gaap	Profit Loss ProfitLoss	251426000	USD
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
	us-gaap	Dividends Common Stock DividendsCommonStock	409730000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-8647000	USD
	stwd	Noncontrolling Interests Increase Decrease From Variable Interest Entity NoncontrollingInterestsIncreaseDecreaseFromVariableInterestEntity	-2177000	USD
	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	9657000	USD
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	88721000	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4885693000	USD
	us-gaap	Profit Loss ProfitLoss	389397000	USD
	us-gaap	Profit Loss ProfitLoss	251426000	USD
	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	32141000	USD
	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	29996000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	5387000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	5933000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	10090000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	9362000	USD
	stwd	Accretion Of Net Deferred Loan Fees And Discounts AccretionOfNetDeferredLoanFeesAndDiscounts	44523000	USD
	stwd	Accretion Of Net Deferred Loan Fees And Discounts AccretionOfNetDeferredLoanFeesAndDiscounts	30468000	USD
	stwd	Share Based Compensation And Nonemployee Services Transaction Expense ShareBasedCompensationAndNonemployeeServicesTransactionExpense	29359000	USD
	stwd	Share Based Compensation And Nonemployee Services Transaction Expense ShareBasedCompensationAndNonemployeeServicesTransactionExpense	22405000	USD
	stwd	Incentive Fee Compensation IncentiveFeeCompensation	16554000	USD
	stwd	Incentive Fee Compensation IncentiveFeeCompensation	36046000	USD
	stwd	Number Of Collateralized Loan Obligations NumberOfCollateralizedLoanObligations	3	collateralizedLoanObligation
	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	903000	USD
	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	3132000	USD
	stwd	Change In Fair Value Of Consolidated Variable Interest Entity ChangeInFairValueOfConsolidatedVariableInterestEntity	-26990000	USD
	stwd	Change In Fair Value Of Consolidated Variable Interest Entity ChangeInFairValueOfConsolidatedVariableInterestEntity	-41008000	USD
	stwd	Change In Fair Value Of Servicing Rights ChangeInFairValueOfServicingRights	2740000	USD
	stwd	Change In Fair Value Of Servicing Rights ChangeInFairValueOfServicingRights	-2328000	USD
	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	68116000	USD
	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	79700000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	70661000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-41146000	USD
	stwd	Foreign Currency Transaction Gain Loss Before Tax Cash Flow Impact ForeignCurrencyTransactionGainLossBeforeTaxCashFlowImpact	-36057000	USD
	stwd	Foreign Currency Transaction Gain Loss Before Tax Cash Flow Impact ForeignCurrencyTransactionGainLossBeforeTaxCashFlowImpact	-1861000	USD
	stwd	Gain On Sale Of Investments Cash Flow GainOnSaleOfInvestmentsCashFlow	26377000	USD
	stwd	Gain On Sale Of Investments Cash Flow GainOnSaleOfInvestmentsCashFlow	6768000	USD
	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	-12363000	USD
	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	55284000	USD
	stwd	Depreciation And Amortization Excluding Amortization Of Above Below Market Leases DepreciationAndAmortizationExcludingAmortizationOfAboveBelowMarketLeases	67653000	USD
	stwd	Depreciation And Amortization Excluding Amortization Of Above Below Market Leases DepreciationAndAmortizationExcludingAmortizationOfAboveBelowMarketLeases	70626000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	6002000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	32065000	USD
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	1623000	USD
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	2334000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2197000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2377000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	3027235000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	1725341000	USD
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	2333767000	USD
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	1997651000	USD
	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	-15792000	USD
	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	-18829000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	105039000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	121923000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	27236000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-3007000	USD
	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	14199000	USD
	us-gaap	Increase Decrease In Accounts Payable And Other Operating Liabilities IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities	-9691000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-461753000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	526149000	USD
	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	5635707000	USD
	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	2368931000	USD
	us-gaap	Proceeds From Loan And Lease Originations And Principal Collections1 ProceedsFromLoanAndLeaseOriginationsAndPrincipalCollections1	3173764000	USD
	us-gaap	Proceeds From Loan And Lease Originations And Principal Collections1 ProceedsFromLoanAndLeaseOriginationsAndPrincipalCollections1	1357445000	USD
	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	267349000	USD
	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	435097000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	0	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	22408000	USD
	stwd	Proceeds From Sales Of Investment Securities ProceedsFromSalesOfInvestmentSecurities	0	USD
	stwd	Proceeds From Sales Of Investment Securities ProceedsFromSalesOfInvestmentSecurities	7940000	USD
	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	77855000	USD
	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	67957000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	60969000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	23805000	USD
	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	17259000	USD
	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	17923000	USD
	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	0	USD
	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	3133000	USD
	stwd	Proceeds From Sale Of Interest In Unconsolidated Entities ProceedsFromSaleOfInterestInUnconsolidatedEntities	0	USD
	stwd	Proceeds From Sale Of Interest In Unconsolidated Entities ProceedsFromSaleOfInterestInUnconsolidatedEntities	10313000	USD
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	25555000	USD
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	2485000	USD
	stwd	Payments For Purchase Or Termination Of Derivatives PaymentsForPurchaseOrTerminationOfDerivatives	14699000	USD
	stwd	Payments For Purchase Or Termination Of Derivatives PaymentsForPurchaseOrTerminationOfDerivatives	76270000	USD
	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	44742000	USD
	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	13667000	USD
	stwd	Number Of Single Asset Single Borrower Loans NumberOfSingleAssetSingleBorrowerLoans	1	loans
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2017431000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-569956000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	11654848000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	4935556000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	8566856000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	4221999000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	46196000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	17978000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	697000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	511000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	27000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	69000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	414977000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	408893000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	5590000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	9657000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	35235000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	90006000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	28830000	USD
	stwd	Proceeds From Issuance Of Debt Of Consolidated Variable Interest Entities ProceedsFromIssuanceOfDebtOfConsolidatedVariableInterestEntities	69399000	USD
	stwd	Proceeds From Issuance Of Debt Of Consolidated Variable Interest Entities ProceedsFromIssuanceOfDebtOfConsolidatedVariableInterestEntities	24376000	USD
	stwd	Repayments Of Debt Of Consolidated Variable Interest Entities RepaymentsOfDebtOfConsolidatedVariableInterestEntities	608435000	USD
	stwd	Repayments Of Debt Of Consolidated Variable Interest Entities RepaymentsOfDebtOfConsolidatedVariableInterestEntities	279419000	USD
	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	83785000	USD
	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	57174000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2142593000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-19920000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-336591000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-63727000	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
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1783000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	902000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	383788000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	511206000	USD
	us-gaap	Interest Paid Net InterestPaidNet	276783000	USD
	us-gaap	Interest Paid Net InterestPaidNet	284855000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	7036000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	2261000	USD
	stwd	Dividendspayablecurrentandnoncurrentdividendsdeclaredduringperiod Dividendspayablecurrentandnoncurrentdividendsdeclaredduringperiod	140465000	USD
	stwd	Dividendspayablecurrentandnoncurrentdividendsdeclaredduringperiod Dividendspayablecurrentandnoncurrentdividendsdeclaredduringperiod	138737000	USD
	stwd	Variable Interest Entity Consolidation In Non Cash Investing And Financing Activities VariableInterestEntityConsolidationInNonCashInvestingAndFinancingActivities	4427479000	USD
	stwd	Variable Interest Entity Consolidation In Non Cash Investing And Financing Activities VariableInterestEntityConsolidationInNonCashInvestingAndFinancingActivities	3589657000	USD
	stwd	Variable Interest Entity Deconsolidation In Non Cash Investing And Financing Activities VariableInterestEntityDeconsolidationInNonCashInvestingAndFinancingActivities	935855000	USD
	stwd	Variable Interest Entity Deconsolidation In Non Cash Investing And Financing Activities VariableInterestEntityDeconsolidationInNonCashInvestingAndFinancingActivities	7652000	USD
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	237132000	USD
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	449025000	USD
	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	124932000	USD
	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	104327000	USD
	stwd	Transfer Of Loans From Variable Interest Entity Assets To Loans Held For Sale Upon Redemption Of Securities TransferOfLoansFromVariableInterestEntityAssetsToLoansHeldForSaleUponRedemptionOfSecurities	432926000	USD
	stwd	Transfer Of Loans From Variable Interest Entity Assets To Loans Held For Sale Upon Redemption Of Securities TransferOfLoansFromVariableInterestEntityAssetsToLoansHeldForSaleUponRedemptionOfSecurities	0	USD
	stwd	Net Assets Acquired Through Foreclosure NetAssetsAcquiredThroughForeclosure	119925000	USD
	stwd	Net Assets Acquired Through Foreclosure NetAssetsAcquiredThroughForeclosure	9911000	USD
	stwd	Loan Principal Collections Temporarily Held At Master Servicer LoanPrincipalCollectionsTemporarilyHeldAtMasterServicer	36308000	USD
	stwd	Loan Principal Collections Temporarily Held At Master Servicer LoanPrincipalCollectionsTemporarilyHeldAtMasterServicer	0	USD
	stwd	Redemption Of Units For Common Stock Value RedemptionOfUnitsForCommonStockValue	17738000	USD
	stwd	Redemption Of Units For Common Stock Value RedemptionOfUnitsForCommonStockValue	8538000	USD
	stwd	Noncash Transaction Unsettled Derivatives NoncashTransactionUnsettledDerivatives	4047000	USD
	stwd	Noncash Transaction Unsettled Derivatives NoncashTransactionUnsettledDerivatives	0	USD
	stwd	Stock Issued During Period Value Unsettled StockIssuedDuringPeriodValueUnsettled	0	USD
	stwd	Stock Issued During Period Value Unsettled StockIssuedDuringPeriodValueUnsettled	379000	USD
	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 both the United States (“U.S.”) and Europe. 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 September 30, 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 both the U.S. and Europe (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, a privately-held private equity firm founded by Mr. Sternlicht.</span></div>
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
	stwd	Percentage Of Annual Reit Taxable Income Distributable To Stockholders Minimum PercentageOfAnnualREITTaxableIncomeDistributableToStockholdersMinimum	0.90
CY2021Q3	stwd	Reo Assets As Percent Of Consolidated Vie Assets ReoAssetsAsPercentOfConsolidatedVieAssets	0.01
CY2021Q3	stwd	Loans As Percent Of Consolidated Vie Assets LoansAsPercentOfConsolidatedVieAssets	0.99
CY2021Q3	stwd	Permitted Reinvestment Under Static Investment In Variable Interest Entity PermittedReinvestmentUnderStaticInvestmentInVariableInterestEntity	0	USD
CY2020Q4	stwd	Mortgage Loans On Real Estate Principal Amount Of Mortgages MortgageLoansOnRealEstatePrincipalAmountOfMortgages	12262840000	USD
	stwd	Mortgage Loans On Real Estate Unrealized Foreign Currency Remeasurement Gain Loss MortgageLoansOnRealEstateUnrealizedForeignCurrencyRemeasurementGainLoss	75934000	USD
	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 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 financial 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 September 30, 2021. However, uncertainty over the ultimate impact COVID-19 will have on the global economy generally, and our business in particular, makes any estimates and assumptions as of September 30, 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>
	us-gaap	Allowance For Loan And Lease Losses Period Increase Decrease AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease	-12114000	USD
	stwd	Mortgage Loans On Real Estate Loans Converted To Equity Interest During Period MortgageLoansOnRealEstateLoansConvertedToEquityInterestDuringPeriod	36308000	USD
	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	24100000	USD
CY2019Q1	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	20900000	USD
CY2021Q3	stwd	Mortgage Loans On Real Estate Gross Carrying Amount Of Mortgages MortgageLoansOnRealEstateGrossCarryingAmountOfMortgages	15534090000	USD
CY2021Q3	stwd	Mortgage Loans On Real Estate Principal Amount Of Mortgages MortgageLoansOnRealEstatePrincipalAmountOfMortgages	15552428000	USD
CY2021Q3	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	15476517000	USD
CY2020Q4	stwd	Mortgage Loans On Real Estate Gross Carrying Amount Of Mortgages MortgageLoansOnRealEstateGrossCarryingAmountOfMortgages	12217352000	USD
CY2020Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	12139908000	USD
	stwd	Mortgage Loans On Real Estate Transfers MortgageLoansOnRealEstateTransfers	431683000	USD
CY2021Q3	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	15476517000	USD
CY2021Q3	us-gaap	Loans Receivable With Variable Rates Of Interest1 LoansReceivableWithVariableRatesOfInterest1	12812961000	USD
CY2021Q3	us-gaap	Loans Receivable Basis Spread On Variable Rate LoansReceivableBasisSpreadOnVariableRate	0.042
CY2021Q3	stwd	Mortgage Loans On Real Estate Gross Carrying Amount Of Mortgages MortgageLoansOnRealEstateGrossCarryingAmountOfMortgages	15534090000	USD
CY2021Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	57573000	USD
CY2020Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	12139908000	USD
	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	8787068000	USD
	stwd	Mortgage Loans On Real Estate Capitalized Interest MortgageLoansOnRealEstateCapitalizedInterest	93960000	USD
	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	2602168000	USD
	srt	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	3386445000	USD
	stwd	Mortgage Loans On Real Estate Discount Accretion And Premium Amortization MortgageLoansOnRealEstateDiscountAccretionAndPremiumAmortization	44523000	USD
	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	68116000	USD
CY2019Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	11470224000	USD
	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	4168949000	USD
	stwd	Mortgage Loans On Real Estate Capitalized Interest MortgageLoansOnRealEstateCapitalizedInterest	105377000	USD
	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	2433412000	USD
	srt	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	1396124000	USD
	stwd	Mortgage Loans On Real Estate Discount Accretion And Premium Amortization MortgageLoansOnRealEstateDiscountAccretionAndPremiumAmortization	30468000	USD
	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	79700000	USD
	stwd	Mortgage Loans On Real Estate Unrealized Foreign Currency Remeasurement Gain Loss MortgageLoansOnRealEstateUnrealizedForeignCurrencyRemeasurementGainLoss	16608000	USD
	us-gaap	Allowance For Loan And Lease Losses Period Increase Decrease AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease	56809000	USD
	stwd	Mortgage Loans On Real Estate Transfers MortgageLoansOnRealEstateTransfers	0	USD
CY2020Q3	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	11931325000	USD
	stwd	Mortgage Loans On Real Estate Transfers From Variable Interest Entities Trusts Redeemed MortgageLoansOnRealEstateTransfersFromVariableInterestEntitiesTrustsRedeemed	2	trust
CY2021Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	6389000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	5675000	USD
CY2021Q3	stwd	Investments Excluding Unconsolidated Entities InvestmentsExcludingUnconsolidatedEntities	670887000	USD
CY2020Q4	stwd	Investments Excluding Unconsolidated Entities InvestmentsExcludingUnconsolidatedEntities	736658000	USD
CY2021Q3	stwd	Purchase Of Marketable Securities PurchaseOfMarketableSecurities	0	USD
CY2021Q3	stwd	Sale Of Marketable Securities SaleOfMarketableSecurities	0	USD
CY2021Q3	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	8988000	USD
CY2021Q3	stwd	Redemption Of Securities RedemptionOfSecurities	0	USD
CY2020Q3	stwd	Purchase Of Marketable Securities PurchaseOfMarketableSecurities	6288000	USD
CY2020Q3	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	17478000	USD
	stwd	Purchase Of Marketable Securities PurchaseOfMarketableSecurities	0	USD
	stwd	Sale Of Marketable Securities SaleOfMarketableSecurities	0	USD
	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	77855000	USD
	stwd	Redemption Of Securities RedemptionOfSecurities	0	USD
	stwd	Purchase Of Marketable Securities PurchaseOfMarketableSecurities	22408000	USD
	stwd	Sale Of Marketable Securities SaleOfMarketableSecurities	7940000	USD
	stwd	Proceeds From Principal Collections On Investment Securities ProceedsFromPrincipalCollectionsOnInvestmentSecurities	67957000	USD
CY2021Q3	stwd	Available For Sale Securities Amortized Cost Before Other Than Temporary Impairment AvailableForSaleSecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	108097000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	108097000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	40486000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	0	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Accumulated Gross Unrealized Gain Loss Before Tax DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax	40486000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	148583000	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
CY2021Q3	stwd	Debt Securities Available For Sale Cost Of Third Party Management DebtSecuritiesAvailableForSaleCostOfThirdPartyManagement	300000	USD
CY2020Q3	stwd	Debt Securities Available For Sale Cost Of Third Party Management DebtSecuritiesAvailableForSaleCostOfThirdPartyManagement	300000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	0	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	USD
CY2021Q3	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
CY2020Q4	stwd	Number Of Securities With Unrealized Losses NumberOfSecuritiesWithUnrealizedLosses	2	security
CY2021Q3	stwd	Number Of Securities With Unrealized Losses NumberOfSecuritiesWithUnrealizedLosses	0	security
CY2021Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	493123000	USD
CY2021Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	6389000	USD
CY2021Q3	stwd	Debt Securities Held To Maturity Net DebtSecuritiesHeldToMaturityNet	486734000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	3913000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	23490000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	467157000	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
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	5675000	USD
	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Purchased With Credit Deterioration Increase DebtSecuritiesHeldToMaturityAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	714000	USD
CY2021Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	6389000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	313928000	USD
CY2021Q3	stwd	Held To Maturity Securities Debt Maturities After One Through Three Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughThreeYearsNetCarryingAmount	139484000	USD
CY2021Q3	stwd	Debt Securities Held To Maturity Amortized Cost Maturity Allocated And Single Maturity Date After Year Three Through Year Five DebtSecuritiesHeldToMaturityAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearThreeThroughYearFive	814000	USD
CY2021Q3	stwd	Held To Maturity Securities Debt Maturities After Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveYearsNetCarryingAmount	32508000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	486734000	USD
CY2021Q3	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	2586365000	USD
CY2020Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	2573296000	USD
CY2021Q3	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	357503000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	302143000	USD
CY2021Q3	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2228862000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2271153000	USD
CY2021Q3	us-gaap	Equity Method Investments EquityMethodInvestments	61829000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	62718000	USD
CY2021Q3	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	32171000	USD
CY2020Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	45336000	USD
CY2021Q3	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	94000000	USD
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	108054000	USD
CY2021Q3	stwd	Number Of Publicly Traded Investments NumberOfPubliclyTradedInvestments	0	Item
CY2021Q3	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	0	USD
CY2021Q3	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	171222000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	106100000	USD
CY2021Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	65122000	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
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	70117000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7306000	USD
	stwd	Intangible Assets Sold IntangibleAssetsSold	-429000	USD
	stwd	Indefinite Lived Intangible Assets Adjustments For Change In Inputs And Assumptions IndefiniteLivedIntangibleAssetsAdjustmentsForChangeInInputsAndAssumptions	2740000	USD
CY2021Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	65122000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	2231000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	7783000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	6043000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	4650000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	3775000	USD
CY2021Q3	stwd	Finite Lived Intangible Assets Amortization Expense Year Five And After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFiveAndAfterYearFive	24698000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	49180000	USD
CY2021Q3	stwd	Debt Instrument Face Amount Purchased By Third Party Investors DebtInstrumentFaceAmountPurchasedByThirdPartyInvestors	210100000	USD
CY2021Q3	stwd	Debt Instrument Convertible Principal Amount For Conversion Ratio DebtInstrumentConvertiblePrincipalAmountForConversionRatio	1000	USD
CY2021Q3	us-gaap	Share Price SharePrice	24.41
CY2021Q3	us-gaap	Share Price SharePrice	24.41
CY2021Q3	us-gaap	Derivative Number Of Instruments Held DerivativeNumberOfInstrumentsHeld	418	contract
CY2021Q3	us-gaap	Derivative Assets DerivativeAssets	52566000	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	40555000	USD
CY2021Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	15615000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	41324000	USD
CY2021Q3	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	41812000	USD
CY2020Q3	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-28097000	USD
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	65792000	USD
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-34485000	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	52566000	USD
CY2021Q3	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2021Q3	us-gaap	Derivative Assets DerivativeAssets	52566000	USD
CY2021Q3	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	12912000	USD
CY2021Q3	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	30023000	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	9631000	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	15615000	USD
CY2021Q3	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2021Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	15615000	USD
CY2021Q3	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	12912000	USD
CY2021Q3	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	2286000	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	417000	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	8004910000	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	8004910000	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	8004910000	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	0	USD
CY2021Q3	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	USD
CY2021Q3	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross	8020525000	USD
CY2021Q3	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	0	USD
CY2021Q3	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoaned	8020525000	USD
CY2021Q3	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Securities DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimSecurities	8017822000	USD
CY2021Q3	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash	2286000	USD
CY2021Q3	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	417000	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
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
	stwd	Stock Issued During Period Shares Atm Equity Offering Sales Agreement StockIssuedDuringPeriodSharesATMEquityOfferingSalesAgreement	0	shares
	stwd	Stock Issued During Period Shares Atm Equity Offering Sales Agreement StockIssuedDuringPeriodSharesATMEquityOfferingSalesAgreement	0	shares
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
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1677654	shares
	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	22.09
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	1493360	shares
	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	18.14
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	36568	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	19.79
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	4029227	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	18.93
CY2021Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	128602000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	151834000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	356290000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	224721000	USD
CY2021Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	1635000	USD
CY2020Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	1721000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	5351000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	3422000	USD
CY2021Q3	stwd	Income Loss From Continuing Operations Basic IncomeLossFromContinuingOperationsBasic	126967000	USD
CY2020Q3	stwd	Income Loss From Continuing Operations Basic IncomeLossFromContinuingOperationsBasic	150113000	USD
	stwd	Income Loss From Continuing Operations Basic IncomeLossFromContinuingOperationsBasic	350939000	USD
	stwd	Income Loss From Continuing Operations Basic IncomeLossFromContinuingOperationsBasic	221299000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	128602000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	151834000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	356290000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	224721000	USD
CY2021Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	1635000	USD
CY2020Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	1721000	USD
CY2020Q3	us-gaap	Dilutive Securities DilutiveSecurities	663000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	5351000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	3422000	USD
CY2021Q3	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2021Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2020Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-642000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2021Q3	stwd	Income Loss From Continuing Operations Diluted IncomeLossFromContinuingOperationsDiluted	129868000	USD
CY2020Q3	stwd	Income Loss From Continuing Operations Diluted IncomeLossFromContinuingOperationsDiluted	153189000	USD
	stwd	Income Loss From Continuing Operations Diluted IncomeLossFromContinuingOperationsDiluted	359656000	USD
	stwd	Income Loss From Continuing Operations Diluted IncomeLossFromContinuingOperationsDiluted	221299000	USD
CY2021Q3	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	285676000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	282596000	shares
	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	284577000	shares
	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	281686000	shares
CY2021Q3	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	19000	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	0	shares
	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	19000	shares
	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	0	shares
CY2021Q3	stwd	Incremental Common Shares Attributable To Non Participating Nonvested Shares IncrementalCommonSharesAttributableToNonParticipatingNonvestedShares	104000	shares
CY2020Q3	stwd	Incremental Common Shares Attributable To Non Participating Nonvested Shares IncrementalCommonSharesAttributableToNonParticipatingNonvestedShares	213000	shares
	stwd	Incremental Common Shares Attributable To Non Participating Nonvested Shares IncrementalCommonSharesAttributableToNonParticipatingNonvestedShares	148000	shares
	stwd	Incremental Common Shares Attributable To Non Participating Nonvested Shares IncrementalCommonSharesAttributableToNonParticipatingNonvestedShares	182000	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	295448000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	292458000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	294393000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	281868000	shares
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.44
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.23
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.44
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.22
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.79
CY2021Q3	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	31078000	USD
CY2021Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020Q3	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	37711000	USD
CY2020Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	83113000	USD
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	54231000	USD
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021Q3	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	24527000	USD
CY2021Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.166
CY2020Q3	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	24688000	USD
CY2020Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.137
	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	73046000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.185
	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	41697000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.162
CY2021Q3	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2153000	USD
CY2021Q3	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.015
CY2020Q3	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4278000	USD
CY2020Q3	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.024
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3308000	USD
	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.008
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4118000	USD
	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.016
CY2021Q3	stwd	Income Tax Reconciliation Federal Benefit Of State Tax Deduction IncomeTaxReconciliationFederalBenefitOfStateTaxDeduction	-452000	USD
CY2021Q3	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.003
CY2020Q3	stwd	Income Tax Reconciliation Federal Benefit Of State Tax Deduction IncomeTaxReconciliationFederalBenefitOfStateTaxDeduction	-899000	USD
CY2020Q3	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.005
	stwd	Income Tax Reconciliation Federal Benefit Of State Tax Deduction IncomeTaxReconciliationFederalBenefitOfStateTaxDeduction	-695000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.002
	stwd	Income Tax Reconciliation Federal Benefit Of State Tax Deduction IncomeTaxReconciliationFederalBenefitOfStateTaxDeduction	-865000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.003
CY2021Q3	stwd	Income Tax Reconciliation Net Operating Loss Carryback Rate Differential IncomeTaxReconciliationNetOperatingLossCarrybackRateDifferential	0	USD
CY2021Q3	stwd	Effective Income Tax Rate Net Operating Loss Carryback Rate Differential EffectiveIncomeTaxRateNetOperatingLossCarrybackRateDifferential	0
CY2020Q3	stwd	Income Tax Reconciliation Net Operating Loss Carryback Rate Differential IncomeTaxReconciliationNetOperatingLossCarrybackRateDifferential	-1569000	USD
CY2020Q3	stwd	Effective Income Tax Rate Net Operating Loss Carryback Rate Differential EffectiveIncomeTaxRateNetOperatingLossCarrybackRateDifferential	-0.009
	stwd	Income Tax Reconciliation Net Operating Loss Carryback Rate Differential IncomeTaxReconciliationNetOperatingLossCarrybackRateDifferential	0	USD
	stwd	Effective Income Tax Rate Net Operating Loss Carryback Rate Differential EffectiveIncomeTaxRateNetOperatingLossCarrybackRateDifferential	0
	stwd	Income Tax Reconciliation Net Operating Loss Carryback Rate Differential IncomeTaxReconciliationNetOperatingLossCarrybackRateDifferential	-5286000	USD
	stwd	Effective Income Tax Rate Net Operating Loss Carryback Rate Differential EffectiveIncomeTaxRateNetOperatingLossCarrybackRateDifferential	-0.020
CY2021Q3	stwd	Income Tax Reconciliation Intra Entity Transfer IncomeTaxReconciliationIntraEntityTransfer	312000	USD
CY2021Q3	stwd	Effective Income Tax Rate Reconciliation Intra Entity Transfer EffectiveIncomeTaxRateReconciliationIntraEntityTransfer	-0.002
CY2020Q3	stwd	Income Tax Reconciliation Intra Entity Transfer IncomeTaxReconciliationIntraEntityTransfer	0	USD
CY2020Q3	stwd	Effective Income Tax Rate Reconciliation Intra Entity Transfer EffectiveIncomeTaxRateReconciliationIntraEntityTransfer	0
	stwd	Income Tax Reconciliation Intra Entity Transfer IncomeTaxReconciliationIntraEntityTransfer	6364000	USD
	stwd	Effective Income Tax Rate Reconciliation Intra Entity Transfer EffectiveIncomeTaxRateReconciliationIntraEntityTransfer	-0.015
	stwd	Income Tax Reconciliation Intra Entity Transfer IncomeTaxReconciliationIntraEntityTransfer	3781000	USD
	stwd	Effective Income Tax Rate Reconciliation Intra Entity Transfer EffectiveIncomeTaxRateReconciliationIntraEntityTransfer	-0.015
CY2021Q3	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-439000	USD
CY2021Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2020Q3	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	10000	USD
CY2020Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	62000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	96000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7501000	USD
CY2021Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.051
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14843000	USD
CY2020Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.083
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6378000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.016
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6816000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.026
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2021Q3	us-gaap	Interest And Fee Income Loans Commercial InterestAndFeeIncomeLoansCommercial	203252000	USD
CY2021Q3	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	10697000	USD
CY2021Q3	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	10473000	USD
CY2021Q3	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	77512000	USD
CY2021Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	352000	USD
CY2021Q3	us-gaap	Revenues Revenues	302286000	USD
CY2021Q3	stwd	Management Fees ManagementFees	23727000	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	115531000	USD
CY2021Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	38864000	USD
CY2021Q3	stwd	Acquisition And Investment Pursuit Costs AcquisitionAndInvestmentPursuitCosts	214000	USD
CY2021Q3	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	31516000	USD
CY2021Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	22041000	USD
CY2021Q3	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	-563000	USD
CY2021Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-23000	USD
CY2021Q3	us-gaap	Costs And Expenses CostsAndExpenses	231353000	USD
CY2021Q3	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	28049000	USD
CY2021Q3	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	2237000	USD
CY2021Q3	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	-299000	USD
CY2021Q3	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	31727000	USD
CY2021Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2042000	USD
CY2021Q3	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	-47000	USD
CY2021Q3	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	41812000	USD
CY2021Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-27003000	USD
CY2021Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-499000	USD
CY2021Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-964000	USD
CY2021Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	77055000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	147988000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7501000	USD
CY2021Q3	us-gaap	Profit Loss ProfitLoss	140487000	USD
CY2021Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	11885000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	128602000	USD
CY2020Q3	us-gaap	Interest And Fee Income Loans Commercial InterestAndFeeIncomeLoansCommercial	169404000	USD
CY2020Q3	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	12186000	USD
CY2020Q3	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	9548000	USD
CY2020Q3	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	75978000	USD
CY2020Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	311000	USD
CY2020Q3	us-gaap	Revenues Revenues	267427000	USD
CY2020Q3	stwd	Management Fees ManagementFees	23127000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	95981000	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	39478000	USD
CY2020Q3	stwd	Acquisition And Investment Pursuit Costs AcquisitionAndInvestmentPursuitCosts	884000	USD
CY2020Q3	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	29522000	USD
CY2020Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	23581000	USD
CY2020Q3	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	-3587000	USD
CY2020Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-172000	USD
CY2020Q3	us-gaap	Costs And Expenses CostsAndExpenses	209158000	USD
CY2020Q3	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	58585000	USD
CY2020Q3	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	634000	USD
CY2020Q3	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	-199000	USD
CY2020Q3	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	61384000	USD
CY2020Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3192000	USD
CY2020Q3	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-28097000	USD
CY2020Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	25452000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	357000	USD
CY2020Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	121308000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	179577000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14843000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	164734000	USD
CY2020Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12900000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	151834000	USD
	us-gaap	Interest And Fee Income Loans Commercial InterestAndFeeIncomeLoansCommercial	583099000	USD
	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	32955000	USD
	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	29739000	USD
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	230969000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3621000	USD
	us-gaap	Revenues Revenues	880383000	USD
	stwd	Management Fees ManagementFees	91713000	USD
	us-gaap	Interest Expense InterestExpense	328558000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	122765000	USD
	stwd	Acquisition And Investment Pursuit Costs AcquisitionAndInvestmentPursuitCosts	806000	USD
	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	90992000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	66992000	USD
	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	-12363000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-708000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	690171000	USD
	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	903000	USD
	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	80303000	USD
	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	2740000	USD
	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	68116000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	6002000	USD
	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	26377000	USD
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	65792000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-36057000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2197000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-6416000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	205563000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	395775000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6378000	USD
	us-gaap	Profit Loss ProfitLoss	389397000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	33107000	USD
	us-gaap	Net Income Loss NetIncomeLoss	356290000	USD
	us-gaap	Interest And Fee Income Loans Commercial InterestAndFeeIncomeLoansCommercial	557934000	USD
	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	42070000	USD
	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	20999000	USD
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	222834000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1756000	USD
	us-gaap	Revenues Revenues	845593000	USD
	stwd	Management Fees ManagementFees	86970000	USD
	us-gaap	Interest Expense InterestExpense	317499000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	110857000	USD
	stwd	Acquisition And Investment Pursuit Costs AcquisitionAndInvestmentPursuitCosts	3383000	USD
	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	87368000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	70982000	USD
	stwd	Provision For Loan Losses Net ProvisionForLoanLossesNet	55284000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-662000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	733005000	USD
	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	64353000	USD
	stwd	Fair Value Of Service Rights Gain Loss FairValueOfServiceRightsGainLoss	-2328000	USD
	us-gaap	Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments	3132000	USD
	stwd	Gain Loss On Mortgage Loans Held For Sale GainLossOnMortgageLoansHeldForSale	79700000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	32065000	USD
	stwd	Gain Loss On Sale Of Investments Net GainLossOnSaleOfInvestmentsNet	6768000	USD
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-34485000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1861000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2377000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	687000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	145654000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	258242000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6816000	USD
	us-gaap	Profit Loss ProfitLoss	251426000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	26705000	USD
	us-gaap	Net Income Loss NetIncomeLoss	224721000	USD
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	273316000	USD
CY2021Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	110472000	USD
CY2021Q3	us-gaap	Notes Receivable Net NotesReceivableNet	13292998000	USD
CY2021Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	2183519000	USD
CY2021Q3	stwd	Investments Excluding Unconsolidated Entities InvestmentsExcludingUnconsolidatedEntities	670887000	USD
CY2021Q3	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2228862000	USD
CY2021Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	65122000	USD
CY2021Q3	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	94000000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	259846000	USD
CY2021Q3	us-gaap	Derivative Assets DerivativeAssets	52566000	USD
CY2021Q3	us-gaap	Interest Receivable InterestReceivable	108126000	USD
CY2021Q3	us-gaap	Other Assets OtherAssets	294670000	USD
CY2021Q3	stwd	Variable Interest Entity Assets VariableInterestEntityAssets	62346480000	USD
CY2021Q3	us-gaap	Assets Assets	81980864000	USD
CY2021Q3	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	210080000	USD
CY2021Q3	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	23378000	USD
CY2021Q3	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	139738000	USD
CY2021Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	15615000	USD
CY2021Q3	us-gaap	Secured Debt SecuredDebt	11502052000	USD
CY2021Q3	us-gaap	Collateralized Financings CollateralizedFinancings	2614230000	USD
CY2021Q3	us-gaap	Unsecured Debt UnsecuredDebt	1733684000	USD
CY2021Q3	stwd	Variable Interest Entity Liabilities VariableInterestEntityLiabilities	60894975000	USD
CY2021Q3	us-gaap	Liabilities Liabilities	77133752000	USD
CY2021Q3	us-gaap	Common Stock Value CommonStockValue	2961000	USD
CY2021Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	5270265000	USD
CY2021Q3	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	138022000	USD
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	40486000	USD
CY2021Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-687980000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	4487710000	USD
CY2021Q3	us-gaap	Minority Interest MinorityInterest	359402000	USD
CY2021Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4847112000	USD
CY2021Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	81980864000	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	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	70117000	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	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

Files In Submission

Name	View Source	Status
0001628280-21-022382-index-headers.html	Edgar Link	pending
0001628280-21-022382-index.html	Edgar Link	pending
0001628280-21-022382.txt	Edgar Link	pending
0001628280-21-022382-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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report.css	Edgar Link	pending
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stwd-20210930.htm	Edgar Link	pending
stwd-20210930.xsd	Edgar Link	pending
stwd-20210930_cal.xml	Edgar Link	unprocessable
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stwd-20210930_htm.xml	Edgar Link	completed
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stwd-20210930_pre.xml	Edgar Link	unprocessable
stwd_ex-311xq32021.htm	Edgar Link	pending
stwd_ex-312xq32021.htm	Edgar Link	pending
stwd_ex-321xq32021.htm	Edgar Link	pending
stwd_ex-322xq32021.htm	Edgar Link	pending

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$STWD
STARWOOD PROPERTY TRUST, INC. Stock $stwd

2021 Q4 Form 10-Q Financial Statement

#000162828021022382 Filed on November 09, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STWD STARWOOD PROPERTY TRUST, INC. Stock $stwd

2021 Q4 Form 10-Q Financial Statement

#000162828021022382 Filed on November 09, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STWD
STARWOOD PROPERTY TRUST, INC. Stock $stwd