$BXMT
BLACKSTONE MORTGAGE TRUST, INC. Stock $bxmt

$bxmt Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-Q Financial Statement

#000106163023000068 Filed on October 25, 2023

Income Statement

Concept	2023 Q4	2023 Q3
Revenue	$505.0M	$519.3M
YoY Change	9.24%	44.84%
Cost Of Revenue	$377.6M	$382.9M
YoY Change	23.79%	67.71%
Gross Profit	$127.4M	$136.5M
YoY Change	-18.97%	4.77%
Gross Profit Margin	25.23%	26.28%
Selling, General & Admin	$11.42M	$10.64M
YoY Change	4.13%	-2.47%
% of Gross Profit	8.96%	7.8%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization
YoY Change
% of Gross Profit
Operating Expenses	$13.25M	$12.00M
YoY Change	-8.54%	-7.2%
Operating Profit	$114.2M	$124.5M
YoY Change	-20.03%	6.09%
Interest Expense		$354.0M
YoY Change		74.92%
% of Operating Profit		284.37%
Other Income/Expense, Net
YoY Change
Pretax Income	-$1.017M	$32.13M
YoY Change	-97.79%	-69.43%
Income Tax	$699.0K	$1.600M
% Of Pretax Income		4.98%
Net Earnings	-$2.377M	$29.52M
YoY Change	-95.0%	-71.4%
Net Earnings / Revenue	-0.47%	5.68%
Basic Earnings Per Share		$0.17
Diluted Earnings Per Share	-$0.01	$0.17
COMMON SHARES
Basic Shares Outstanding	172.3M shares	172.3M shares
Diluted Shares Outstanding		172.6M shares

Balance Sheet

Concept	2023 Q4	2023 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$350.0M	$421.5M
YoY Change	20.14%	55.02%
Cash & Equivalents	$350.0M	$421.5M
Short-Term Investments
Other Short-Term Assets	$153.4M	$63.68M
YoY Change	120.6%	1393.18%
Inventory
Prepaid Expenses
Receivables	$214.8M	$189.6M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$718.3M	$674.8M
YoY Change	30.49%	59.51%
LONG-TERM ASSETS
Property, Plant & Equipment
YoY Change
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets	$23.32B	$23.37B
YoY Change	-5.99%	-4.13%
TOTAL ASSETS
Total Short-Term Assets	$718.3M	$674.8M
Total Long-Term Assets	$23.32B	$23.37B
Total Assets	$24.04B	$24.04B
YoY Change	-5.2%	-3.05%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$7.265M	$7.742M
YoY Change	-25.3%	6.46%
Accrued Expenses	$124.2M	$99.61M
YoY Change	8.83%	19.16%
Deferred Revenue
YoY Change
Short-Term Debt	$15.37M	$13.62M
YoY Change	-6.16%	46.89%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$254.2M	$227.8M
YoY Change	3.05%	10.53%
LONG-TERM LIABILITIES
Long-Term Debt	$19.29B	$19.27B
YoY Change	-5.38%	-3.18%
Other Long-Term Liabilities	$108.3M	$50.23M
YoY Change	-39.89%	1430.97%
Total Long-Term Liabilities	$19.39B	$19.32B
YoY Change	-5.68%	-2.95%
TOTAL LIABILITIES
Total Short-Term Liabilities	$254.2M	$227.8M
Total Long-Term Liabilities	$19.39B	$19.32B
Total Liabilities	$19.65B	$19.55B
YoY Change	-5.58%	-2.81%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.151B	-$1.041B
YoY Change	18.81%	27.8%
Common Stock	$5.509B	$5.501B
YoY Change	0.58%	0.59%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.368B	$4.471B
YoY Change
Total Liabilities & Shareholders Equity	$24.04B	$24.04B
YoY Change	-5.2%	-3.05%

Cashflow Statement

Concept	2023 Q4	2023 Q3
OPERATING ACTIVITIES
Net Income	-$2.377M	$29.52M
YoY Change	-95.0%	-71.4%
Depreciation, Depletion And Amortization
YoY Change
Cash From Operating Activities	$109.8M	$111.0M
YoY Change	-15.69%	33.7%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	$257.0M	$448.4M
YoY Change	-580.66%	119.4%
Cash From Investing Activities	$257.0M	$448.4M
YoY Change	-580.66%	119.4%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-440.5M	-619.0M
YoY Change	583.91%	111.54%
NET CHANGE
Cash From Operating Activities	109.8M	111.0M
Cash From Investing Activities	257.0M	448.4M
Cash From Financing Activities	-440.5M	-619.0M
Net Change In Cash	-73.71M	-59.55M
YoY Change	-697.11%	1044.95%
FREE CASH FLOW
Cash From Operating Activities	$109.8M	$111.0M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q3	us-gaap	Other Assets OtherAssets	369446000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	370902000	usd
CY2023Q3	us-gaap	Assets Assets	24043419000	usd
CY2022Q4	us-gaap	Assets Assets	25353985000	usd
CY2023Q3	us-gaap	Secured Debt Repurchase Agreements SecuredDebtRepurchaseAgreements	12793344000	usd
CY2022Q4	us-gaap	Secured Debt Repurchase Agreements SecuredDebtRepurchaseAgreements	13528164000	usd
CY2023Q3	bxmt	Securitized Debt Obligations Net SecuritizedDebtObligationsNet	2509254000	usd
CY2022Q4	bxmt	Securitized Debt Obligations Net SecuritizedDebtObligationsNet	2664010000	usd
CY2022Q4	bxmt	Asset Specific Debt Agreements Net AssetSpecificDebtAgreementsNet	942503000	usd
CY2023Q3	us-gaap	Participating Mortgage Loans Participation Liabilities Amount ParticipatingMortgageLoansParticipationLiabilitiesAmount	275184000	usd
CY2022Q4	us-gaap	Participating Mortgage Loans Participation Liabilities Amount ParticipatingMortgageLoansParticipationLiabilitiesAmount	224232000	usd
CY2023Q3	us-gaap	Secured Long Term Debt SecuredLongTermDebt	2104824000	usd
CY2022Q4	us-gaap	Secured Long Term Debt SecuredLongTermDebt	2114549000	usd
CY2023Q3	us-gaap	Senior Notes SeniorNotes	362981000	usd
CY2022Q4	us-gaap	Senior Notes SeniorNotes	395166000	usd
CY2023Q3	us-gaap	Convertible Debt Fair Value Disclosures ConvertibleDebtFairValueDisclosures	295527000	usd
CY2022Q4	us-gaap	Convertible Debt Fair Value Disclosures ConvertibleDebtFairValueDisclosures	514257000	usd
CY2023Q3	us-gaap	Other Liabilities OtherLiabilities	278027000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	426904000	usd
CY2023Q3	us-gaap	Liabilities Liabilities	19549898000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	20809785000	usd
CY2023Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
CY2023Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2023Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	1717000	usd
CY2023Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	5499491000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	5475804000	usd
CY2023Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	10606000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	10022000	usd
CY2023Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1040950000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-968749000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	4470870000	usd
CY2023Q3	us-gaap	Minority Interest MinorityInterest	22651000	usd
CY2022Q4	us-gaap	Minority Interest MinorityInterest	25406000	usd
CY2023Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4493521000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4544200000	usd
CY2023Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24043419000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	25353985000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	519342000	usd
CY2022Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	358557000	usd
	us-gaap	Interest Expense InterestExpense	1015718000	usd
	us-gaap	Interest Expense InterestExpense	439708000	usd
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	165370000	usd
CY2022Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	156182000	usd
CY2023Q3	us-gaap	Management Fee Expense ManagementFeeExpense	28882000	usd
CY2022Q3	us-gaap	Management Fee Expense ManagementFeeExpense	25911000	usd
CY2023Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12001000	usd
CY2022Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12932000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	40883000	usd
CY2022Q3	us-gaap	Noninterest Expense NoninterestExpense	38843000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	96900000	usd
CY2022Q3	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	12248000	usd
CY2021	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2023#AccountingStandardsUpdate202006Member
CY2023Q3	bxmt	Asset Specific Debt Agreements Net AssetSpecificDebtAgreementsNet	930757000	usd
CY2023Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	172296051	shares
CY2023Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	172296051	shares
CY2023Q3	us-gaap	Common Stock Value CommonStockValue	1723000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	4518794000	usd
CY2023Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	4541000	usd
CY2022Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	32128000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2064000	usd
	us-gaap	Profit Loss ProfitLoss	251613000	usd
	us-gaap	Profit Loss ProfitLoss	298047000	usd
CY2022Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	673000	usd
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2681000	usd
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1864000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	29524000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	103246000	usd
	us-gaap	Net Income Loss NetIncomeLoss	248932000	usd
	us-gaap	Net Income Loss NetIncomeLoss	296183000	usd
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.44
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.74
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.44
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.71
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172648118	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	170971874	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172620799	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	170303470	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	172648118	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	185316078	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	180891859	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	182011842	shares
CY2023Q3	us-gaap	Profit Loss ProfitLoss	30560000	usd
CY2022Q3	us-gaap	Profit Loss ProfitLoss	103919000	usd
	us-gaap	Profit Loss ProfitLoss	298047000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-71782000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-158097000	usd
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-21455000	usd
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-333526000	usd
CY2023Q3	bxmt	Other Comprehensive Income Realized And Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	71648000	usd
CY2022Q3	bxmt	Other Comprehensive Income Realized And Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	154849000	usd
	bxmt	Other Comprehensive Income Realized And Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	22039000	usd
	bxmt	Other Comprehensive Income Realized And Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeRealizedAndUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	329048000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-134000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3248000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	584000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4478000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	30426000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	100671000	usd
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	252197000	usd
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	293569000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1036000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	673000	usd
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	2681000	usd
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1864000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	29390000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	99998000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	249516000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	291705000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4544200000	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	7492000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	287000	usd
CY2023Q1	bxmt	Adjustments To Additional Paid In Capital Deferred Compensation AdjustmentsToAdditionalPaidInCapitalDeferredCompensation	163000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	118556000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2194000	usd
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.62
CY2023Q1	us-gaap	Dividends Dividends	107072000	usd
CY2023Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	733000	usd
CY2023Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4560699000	usd
CY2023Q2	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	7492000	usd
CY2023Q2	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	235000	usd
CY2023Q2	bxmt	Adjustments To Additional Paid In Capital Deferred Compensation AdjustmentsToAdditionalPaidInCapitalDeferredCompensation	173000	usd
CY2023Q2	us-gaap	Profit Loss ProfitLoss	102497000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2912000	usd
CY2023Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.62
CY2023Q2	us-gaap	Dividends Dividends	107028000	usd
CY2023Q2	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	791000	usd
CY2023Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4566189000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	7434000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	245000	usd
CY2023Q3	bxmt	Adjustments To Additional Paid In Capital Deferred Compensation AdjustmentsToAdditionalPaidInCapitalDeferredCompensation	172000	usd
CY2023Q3	us-gaap	Profit Loss ProfitLoss	30560000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-134000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.62
CY2023Q3	us-gaap	Dividends Dividends	107033000	usd
CY2023Q3	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	3912000	usd
CY2023Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4493521000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4618711000	usd
CY2022Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	52154000	usd
CY2022Q1	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	8477000	usd
CY2022Q1	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	246000	usd
CY2022Q1	bxmt	Adjustments To Additional Paid In Capital Deferred Compensation AdjustmentsToAdditionalPaidInCapitalDeferredCompensation	173000	usd
CY2022Q1	us-gaap	Profit Loss ProfitLoss	100263000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	292000	usd
CY2022Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.62
CY2022Q1	us-gaap	Dividends Dividends	105801000	usd
CY2022Q1	bxmt	Cash Contributions From Joint Venture Partners That Increase Equity CashContributionsFromJointVenturePartnersThatIncreaseEquity	5040000	usd
CY2022Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	9241000	usd
CY2022Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4669837000	usd
CY2022Q2	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	8245000	usd
CY2022Q2	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	319000	usd
CY2022Q2	bxmt	Adjustments To Additional Paid In Capital Deferred Compensation AdjustmentsToAdditionalPaidInCapitalDeferredCompensation	173000	usd
CY2022Q2	us-gaap	Profit Loss ProfitLoss	93865000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1522000	usd
CY2022Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.62
CY2022Q2	us-gaap	Dividends Dividends	105812000	usd
CY2022Q2	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2118000	usd
CY2022Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4662987000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	18496000	usd
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	8046000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	299000	usd
CY2022Q3	bxmt	Adjustments To Additional Paid In Capital Deferred Compensation AdjustmentsToAdditionalPaidInCapitalDeferredCompensation	173000	usd
CY2022Q3	us-gaap	Profit Loss ProfitLoss	103919000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3248000	usd
CY2022Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.62
CY2022Q3	us-gaap	Dividends Dividends	106197000	usd
CY2022Q3	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	568000	usd
CY2022Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4683907000	usd
	us-gaap	Profit Loss ProfitLoss	251613000	usd
	us-gaap	Profit Loss ProfitLoss	298047000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	22926000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	25286000	usd
	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	60333000	usd
	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	59285000	usd
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	42620000	usd
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	35455000	usd
	bxmt	Increase Decrease In Current Expected Credit Loss Reserve IncreaseDecreaseInCurrentExpectedCreditLossReserve	134530000	usd
	bxmt	Increase Decrease In Current Expected Credit Loss Reserve IncreaseDecreaseInCurrentExpectedCreditLossReserve	22694000	usd
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	4541000	usd
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
	us-gaap	Difference Between Reported Amount And Reporting Currency Denominated Amount Value DifferenceBetweenReportedAmountAndReportingCurrencyDenominatedAmountValue	0	usd
	us-gaap	Difference Between Reported Amount And Reporting Currency Denominated Amount Value DifferenceBetweenReportedAmountAndReportingCurrencyDenominatedAmountValue	-31000	usd
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-3195000	usd
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	3227000	usd
	bxmt	Realized Gains Losses On Derivative Financial Instruments Net RealizedGainsLossesOnDerivativeFinancialInstrumentsNet	23800000	usd
	bxmt	Realized Gains Losses On Derivative Financial Instruments Net RealizedGainsLossesOnDerivativeFinancialInstrumentsNet	8418000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	931000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	72769000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-16226000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	28858000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	349053000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	266610000	usd
	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	1068853000	usd
	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	6210880000	usd
	us-gaap	Proceeds From Sale And Collection Of Loans Receivable ProceedsFromSaleAndCollectionOfLoansReceivable	2325690000	usd
	us-gaap	Proceeds From Sale And Collection Of Loans Receivable ProceedsFromSaleAndCollectionOfLoansReceivable	2670902000	usd
	us-gaap	Proceeds From Loan Originations1 ProceedsFromLoanOriginations1	11046000	usd
	us-gaap	Proceeds From Loan Originations1 ProceedsFromLoanOriginations1	67950000	usd
	bxmt	Payments For Derivative Instruments In Investing Activities PaymentsForDerivativeInstrumentsInInvestingActivities	224367000	usd
	bxmt	Payments For Derivative Instruments In Investing Activities PaymentsForDerivativeInstrumentsInInvestingActivities	7385000	usd
	bxmt	Proceeds From Derivative Instruments In Investing Activities ProceedsFromDerivativeInstrumentsInInvestingActivities	40466000	usd
	bxmt	Proceeds From Derivative Instruments In Investing Activities ProceedsFromDerivativeInstrumentsInInvestingActivities	279343000	usd
	bxmt	Payments For Collateral Deposits Related To Derivatives PaymentsForCollateralDepositsRelatedToDerivatives	230620000	usd
	bxmt	Payments For Collateral Deposits Related To Derivatives PaymentsForCollateralDepositsRelatedToDerivatives	56330000	usd
	bxmt	Proceeds From Collateral Deposits Related To Derivatives ProceedsFromCollateralDepositsRelatedToDerivatives	333730000	usd
	bxmt	Proceeds From Collateral Deposits Related To Derivatives ProceedsFromCollateralDepositsRelatedToDerivatives	56330000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1187092000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3200070000	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1490503000	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	4857829000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	2162706000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	3090429000	usd
	bxmt	Repayments For Collateralized Loan Obligations RepaymentsForCollateralizedLoanObligations	161030000	usd
	bxmt	Repayments For Collateralized Loan Obligations RepaymentsForCollateralizedLoanObligations	0	usd
	bxmt	Proceeds From Asset Specific Debt Agreements ProceedsFromAssetSpecificDebtAgreements	223357000	usd
	bxmt	Proceeds From Asset Specific Debt Agreements ProceedsFromAssetSpecificDebtAgreements	654578000	usd
	bxmt	Repayments Of Asset Specific Debt Agreements RepaymentsOfAssetSpecificDebtAgreements	239037000	usd
	bxmt	Repayments Of Asset Specific Debt Agreements RepaymentsOfAssetSpecificDebtAgreements	78659000	usd
	bxmt	Proceeds From Sale Of Loan Participation ProceedsFromSaleOfLoanParticipation	50692000	usd
	bxmt	Proceeds From Sale Of Loan Participation ProceedsFromSaleOfLoanParticipation	245278000	usd
	bxmt	Proceeds From Issuance Of Secured Term Loan ProceedsFromIssuanceOfSecuredTermLoan	0	usd
	bxmt	Proceeds From Issuance Of Secured Term Loan ProceedsFromIssuanceOfSecuredTermLoan	492500000	usd
	bxmt	Repayments Of Secured Term Loans RepaymentsOfSecuredTermLoans	16497000	usd
	bxmt	Repayments Of Secured Term Loans RepaymentsOfSecuredTermLoans	11554000	usd
	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	28525000	usd
	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	usd
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	usd
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	294000000	usd
	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	220000000	usd
	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	402500000	usd
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	18680000	usd
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	37747000	usd
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	usd
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	5040000	usd
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	5436000	usd
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	11927000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	70651000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	320104000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	315430000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1407463000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2671630000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	128682000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-261830000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	291340000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	551154000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1473000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-17425000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	421495000	usd
	us-gaap	Interest Paid Net InterestPaidNet	981945000	usd
	us-gaap	Interest Paid Net InterestPaidNet	374646000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5228000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	730000	usd
	bxmt	Dividends Declared And Not Paid DividendsDeclaredAndNotPaid	106824000	usd
	bxmt	Dividends Declared And Not Paid DividendsDeclaredAndNotPaid	105956000	usd
	bxmt	Loan Principal Payments Held By Servicer LoanPrincipalPaymentsHeldByServicer	12713000	usd
	bxmt	Loan Principal Payments Held By Servicer LoanPrincipalPaymentsHeldByServicer	1902000	usd
CY2023Q3	bxmt	Financing Receivable Number Of Loans FinancingReceivableNumberOfLoans	185	loan
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	23715901000	usd
CY2023Q3	bxmt	Financing Receivable Loans Exposure Amount FinancingReceivableLoansExposureAmount	24912876000	usd
	us-gaap	Nature Of Operations NatureOfOperations	ORGANIZATION <div style="margin-top:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">References herein to “Blackstone Mortgage Trust,” “Company,” “we,” “us” or “our” refer to Blackstone Mortgage Trust, Inc., a Maryland corporation, and its subsidiaries unless the context specifically requires otherwise. </span></div><div style="margin-top:12pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">Blackstone Mortgage Trust is a real estate finance company that originates senior loans collateralized by commercial real estate in North America, Europe, and Australia. Our portfolio is composed primarily of loans secured by high-quality, institutional assets in major markets, sponsored by experienced, well-capitalized real estate investment owners and operators. These senior loans are capitalized by accessing a variety of financing options, including borrowing under our credit facilities, issuing CLOs or single-asset securitizations, and syndicating senior loan participations, depending on our view of the most prudent financing option available for each of our investments. We are not in the business of buying or trading securities, and the only securities we own are the retained interests from our securitization financing transactions, which we have not financed. We are externally managed by BXMT Advisors L.L.C., or our Manager, a subsidiary of Blackstone Inc., or Blackstone, and are a real estate investment trust, or REIT, traded on the New York Stock Exchange, or NYSE, under the symbol “BXMT.” Our principal executive offices are located at 345 Park Avenue, 24th Floor, New York, New York 10154. </span></div><div style="margin-top:12pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">We conduct our operations as a REIT for U.S. federal income tax purposes. We generally will not be subject to U.S. federal income taxes on our taxable income to the extent that we annually distribute all of our net taxable income to stockholders and maintain our qualification as a REIT. We also operate our business in a manner that permits us to maintain an exclusion from registration under the Investment Company Act of 1940, as amended. We are organized as a holding company and conduct our business primarily through our various subsidiaries.</span></div>
CY2017Q4	bxmt	Joint Venture Capital Contribution Percentage JointVentureCapitalContributionPercentage	0.85
	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:6pt;margin-top:18pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:115%">Use of Estimates </span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">The preparation of consolidated 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 as of the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may ultimately differ materially from those estimates.</span></div>
	us-gaap	Revenue Recognition Interest RevenueRecognitionInterest	<div style="margin-top:18pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:115%">Revenue Recognition </span></div><div style="margin-top:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">Interest income from our loans receivable portfolio is recognized over the life of each investment using the effective interest method and is recorded on the accrual basis. Recognition of fees, premiums, and discounts associated with these investments is deferred and recorded over the term of the loan as an adjustment to yield. Income accrual is generally suspended for loans at the earlier of the date at which payments become 90 days past due or when, in our opinion, recovery of income and principal becomes doubtful. Interest received is then recorded as income or as a reduction in the amortized cost basis, based on the specific facts and circumstances, until accrual is resumed when the loan becomes contractually current and performance is demonstrated to be resumed. In addition, for loans we originate, the related origination expenses are deferred and recognized as a reduction to interest income, however expenses related to loans we acquire are included in general and administrative expenses as incurred.</span></div>
CY2023Q3	bxmt	Financing Receivable Excluding Accrued Interest Net Loans Exposure Amount FinancingReceivableExcludingAccruedInterestNetLoansExposureAmount	22134209000	usd
CY2023Q3	bxmt	Financing Receivable Percentage Of Loan Portfolio FinancingReceivablePercentageOfLoanPortfolio	1
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	463423000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	23252478000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	23800000000	usd
CY2023Q3	bxmt	Loan Exposure Amount Including Non Consolidated Senior Interests LoanExposureAmountIncludingNonConsolidatedSeniorInterests	1100000000	usd
CY2023Q3	us-gaap	Restricted Cash RestrictedCash	0	usd
CY2022Q4	us-gaap	Restricted Cash RestrictedCash	0	usd
CY2023Q3	us-gaap	Escrow Deposit EscrowDeposit	634700000	usd
CY2022Q4	us-gaap	Escrow Deposit EscrowDeposit	459600000	usd
CY2023Q3	bxmt	Loan Exposure Amount Including Non Consolidated Senior Interests LoanExposureAmountIncludingNonConsolidatedSeniorInterests	1100000000	usd
CY2023Q3	bxmt	Net Loan Exposure Amount Asset Specific Debt NetLoanExposureAmountAssetSpecificDebt	935400000	usd
	bxmt	Financing Receivable Unamortized Loan Fee Cost And Purchase Premium Discount Sale And Collection Of Finance Receivables And Cost Recovery Proceeds FinancingReceivableUnamortizedLoanFeeCostAndPurchasePremiumDiscountSaleAndCollectionOfFinanceReceivablesAndCostRecoveryProceeds	40700000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	463400000	usd
CY2022Q4	bxmt	Financing Receivable Number Of Loans FinancingReceivableNumberOfLoans	203	loan
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	25017880000	usd
CY2022Q4	bxmt	Financing Receivable Loans Exposure Amount FinancingReceivableLoansExposureAmount	26810281000	usd
CY2023Q3	bxmt	Financing Receivable Number Of Loans FinancingReceivableNumberOfLoans	185	security_loan
CY2022Q4	bxmt	Financing Receivable Number Of Loans FinancingReceivableNumberOfLoans	203	security_loan
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	23849497000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	25160343000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	23252478000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	24691743000	usd
	bxmt	Mortgage Loan On Real Estate Final Maturity Term MortgageLoanOnRealEstateFinalMaturityTerm	P2Y7M6D
CY2022	bxmt	Mortgage Loan On Real Estate Final Maturity Term MortgageLoanOnRealEstateFinalMaturityTerm	P3Y1M6D
CY2023Q3	bxmt	Loans Receivable Percentage Of Loans By Principal Balance Fixed Rate LoansReceivablePercentageOfLoansByPrincipalBalanceFixedRate	0.01
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	23849497000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	25160343000	usd
CY2022Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-142463000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	25017880000	usd
	bxmt	Financing Receivable New Issue FinancingReceivableNewIssue	1068853000	usd
	bxmt	Financing Receivable New Issue FinancingReceivableNewIssue	1068853000	usd
	bxmt	Financing Receivable Sale And Collection Of Finance Receivables And Cost Recovery Proceeds FinancingReceivableSaleAndCollectionOfFinanceReceivablesAndCostRecoveryProceeds	2280034000	usd
	bxmt	Financing Receivable Unamortized Loan Fee Cost And Purchase Premium Discount Sale And Collection Of Finance Receivables And Cost Recovery Proceeds FinancingReceivableUnamortizedLoanFeeCostAndPurchasePremiumDiscountSaleAndCollectionOfFinanceReceivablesAndCostRecoveryProceeds	40733000	usd
	bxmt	Financing Receivable Before Allowance For Credit Loss Fee And Loan In Process Sale And Collection Of Finance Receivables And Cost Recovery Proceeds FinancingReceivableBeforeAllowanceForCreditLossFeeAndLoanInProcessSaleAndCollectionOfFinanceReceivablesAndCostRecoveryProceeds	2320767000	usd
	bxmt	Financing Receivable Gain Loss On Foreign Currency Translation FinancingReceivableGainLossOnForeignCurrencyTranslation	-99665000	usd
	bxmt	Financing Receivable Unamortized Loan Fee Cost And Purchase Premium Discount Gain Loss On Foreign Currency Translation FinancingReceivableUnamortizedLoanFeeCostAndPurchasePremiumDiscountGainLossOnForeignCurrencyTranslation	-313000	usd
	bxmt	Financing Receivable Before Allowance For Credit Loss Fee And Loan In Process Gain Loss On Foreign Currency Translation FinancingReceivableBeforeAllowanceForCreditLossFeeAndLoanInProcessGainLossOnForeignCurrencyTranslation	-99352000	usd
	bxmt	Financing Receivable Unamortized Loan Fee Cost And Purchase Premium Discount New Issues FinancingReceivableUnamortizedLoanFeeCostAndPurchasePremiumDiscountNewIssues	11046000	usd
	bxmt	Financing Receivable Unamortized Loan Fee Cost And Purchase Premium Discount New Issues FinancingReceivableUnamortizedLoanFeeCostAndPurchasePremiumDiscountNewIssues	11046000	usd
	bxmt	Financing Receivable Unamortized Loan Fee Cost And Purchase Premium Discount Amortization FinancingReceivableUnamortizedLoanFeeCostAndPurchasePremiumDiscountAmortization	60333000	usd
	bxmt	Financing Receivable Unamortized Loan Fee Cost And Purchase Premium Discount Amortization FinancingReceivableUnamortizedLoanFeeCostAndPurchasePremiumDiscountAmortization	60333000	usd
CY2023Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-133596000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	23715901000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	463423000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	23252478000	usd
CY2023Q3	bxmt	Financing Receivable Number Of Loans FinancingReceivableNumberOfLoans	185	loan
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	23715901000	usd
CY2023Q3	bxmt	Financing Receivable Loans Exposure Amount FinancingReceivableLoansExposureAmount	24912876000	usd
CY2023Q3	bxmt	Financing Receivable Excluding Accrued Interest Net Loans Exposure Amount FinancingReceivableExcludingAccruedInterestNetLoansExposureAmount	22134209000	usd
CY2023Q3	bxmt	Financing Receivable Percentage Of Loan Portfolio FinancingReceivablePercentageOfLoanPortfolio	1
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	463423000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	23252478000	usd
CY2022Q4	bxmt	Financing Receivable Excluding Accrued Interest Net Loans Exposure Amount FinancingReceivableExcludingAccruedInterestNetLoansExposureAmount	23659183000	usd
CY2022Q4	bxmt	Financing Receivable Percentage Of Loan Portfolio FinancingReceivablePercentageOfLoanPortfolio	1
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	326137000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	24691743000	usd
CY2022Q4	bxmt	Financing Receivable Percentage Of Loan Portfolio FinancingReceivablePercentageOfLoanPortfolio	1
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	326137000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	24691743000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	25200000000	usd
CY2022Q4	bxmt	Loan Exposure Amount Including Non Consolidated Senior Interests LoanExposureAmountIncludingNonConsolidatedSeniorInterests	1600000000	usd
CY2022Q4	bxmt	Loan Exposure Amount Including Non Consolidated Senior Interests LoanExposureAmountIncludingNonConsolidatedSeniorInterests	1600000000	usd
CY2022Q4	bxmt	Net Loan Exposure Amount Asset Specific Debt NetLoanExposureAmountAssetSpecificDebt	950300000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	326100000	usd
CY2023Q3	bxmt	Financing Receivable Number Of Loans FinancingReceivableNumberOfLoans	185	loan
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	23715901000	usd
CY2023Q3	bxmt	Financing Receivable Loans Exposure Amount FinancingReceivableLoansExposureAmount	24912876000	usd
CY2023Q3	bxmt	Financing Receivable Excluding Accrued Interest Net Loans Exposure Amount FinancingReceivableExcludingAccruedInterestNetLoansExposureAmount	22134209000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	463423000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	23252478000	usd
CY2022Q4	bxmt	Financing Receivable Number Of Loans FinancingReceivableNumberOfLoans	203	loan
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	25017880000	usd
CY2022Q4	bxmt	Financing Receivable Loans Exposure Amount FinancingReceivableLoansExposureAmount	26810281000	usd
CY2022Q4	bxmt	Financing Receivable Excluding Accrued Interest Net Loans Exposure Amount FinancingReceivableExcludingAccruedInterestNetLoansExposureAmount	23659183000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	326137000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	24691743000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	23800000000	usd
CY2023Q3	bxmt	Loan Exposure Amount Including Non Consolidated Senior Interests LoanExposureAmountIncludingNonConsolidatedSeniorInterests	1100000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	25200000000	usd
CY2022Q4	bxmt	Loan Exposure Amount Including Non Consolidated Senior Interests LoanExposureAmountIncludingNonConsolidatedSeniorInterests	1600000000	usd
CY2023Q3	bxmt	Loan Exposure Amount Including Non Consolidated Senior Interests LoanExposureAmountIncludingNonConsolidatedSeniorInterests	1100000000	usd
CY2023Q3	bxmt	Net Loan Exposure Amount Asset Specific Debt NetLoanExposureAmountAssetSpecificDebt	935400000	usd
	bxmt	Financing Receivable Unamortized Loan Fee Cost And Purchase Premium Discount Sale And Collection Of Finance Receivables And Cost Recovery Proceeds FinancingReceivableUnamortizedLoanFeeCostAndPurchasePremiumDiscountSaleAndCollectionOfFinanceReceivablesAndCostRecoveryProceeds	40700000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	463400000	usd
CY2022Q4	bxmt	Loan Exposure Amount Including Non Consolidated Senior Interests LoanExposureAmountIncludingNonConsolidatedSeniorInterests	1600000000	usd
CY2022Q4	bxmt	Net Loan Exposure Amount Asset Specific Debt NetLoanExposureAmountAssetSpecificDebt	950300000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	326100000	usd
CY2023Q3	bxmt	Weighted Average Risk Rating WeightedAverageRiskRating	2.9
CY2022Q4	bxmt	Weighted Average Risk Rating WeightedAverageRiskRating	2.9
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	326137000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	10454000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	336591000	usd
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	27284000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	363875000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	99548000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	463423000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	124679000	usd
CY2022Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	-2458000	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	122221000	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	10803000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	133024000	usd
CY2022Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	11407000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	144431000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	463400000	usd
CY2023Q3	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	10200000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	463423000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	23252478000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	326137000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	24691743000	usd
	bxmt	Financing Receivable Modified Number Of Contracts FinancingReceivableModifiedNumberOfContracts	4	loan
CY2023Q3	us-gaap	Interest Receivable InterestReceivable	189609000	usd
CY2022Q4	us-gaap	Interest Receivable InterestReceivable	189569000	usd
CY2023Q3	us-gaap	Derivative Assets DerivativeAssets	114558000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	7349000	usd
CY2023Q3	bxmt	Loan Portfolio Payments Held By Our Third Party Loan Servicer LoanPortfolioPaymentsHeldByOurThirdPartyLoanServicer	63566000	usd
CY2022Q4	bxmt	Loan Portfolio Payments Held By Our Third Party Loan Servicer LoanPortfolioPaymentsHeldByOurThirdPartyLoanServicer	68489000	usd
CY2023Q3	bxmt	Accounts Receivable Net Current And Other Assets Current AccountsReceivableNetCurrentAndOtherAssetsCurrent	1595000	usd
CY2022Q4	bxmt	Accounts Receivable Net Current And Other Assets Current AccountsReceivableNetCurrentAndOtherAssetsCurrent	1318000	usd
CY2023Q3	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	118000	usd
CY2022Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	1067000	usd
CY2023Q3	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	0	usd
CY2022Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	103110000	usd
CY2023Q3	us-gaap	Other Assets OtherAssets	369446000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	370902000	usd
CY2023Q3	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	106824000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	106455000	usd
CY2023Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	70724000	usd
CY2022Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	80263000	usd
CY2023Q3	bxmt	Secured Debt Repayments Pending Servicer Remittance SecuredDebtRepaymentsPendingServicerRemittance	49903000	usd
CY2022Q4	bxmt	Secured Debt Repayments Pending Servicer Remittance SecuredDebtRepaymentsPendingServicerRemittance	60585000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	13624000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	16380000	usd
CY2023Q3	us-gaap	Accounts Payable And Other Accrued Liabilities AccountsPayableAndOtherAccruedLiabilities	7742000	usd
CY2022Q4	us-gaap	Accounts Payable And Other Accrued Liabilities AccountsPayableAndOtherAccruedLiabilities	9726000	usd
CY2023Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	328000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	119665000	usd
CY2023Q3	us-gaap	Other Liabilities OtherLiabilities	278027000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	426904000	usd
CY2023Q3	bxmt	Debt Instrument Covenant Requirement On Consolidated Tangible Net Worth Minimum DebtInstrumentCovenantRequirementOnConsolidatedTangibleNetWorthMinimum	3600000000	usd
CY2023Q3	bxmt	Debt Instrument Covenant Maximum Percentage Of Cash Liquidity On Recourse Indebtedness DebtInstrumentCovenantMaximumPercentageOfCashLiquidityOnRecourseIndebtedness	0.05
CY2023Q3	bxmt	Interest Expense Secured Debt InterestExpenseSecuredDebt	44500000	usd
	bxmt	Interest Expense Secured Debt InterestExpenseSecuredDebt	127600000	usd
CY2022Q3	bxmt	Interest Expense Secured Debt InterestExpenseSecuredDebt	26100000	usd
	bxmt	Interest Expense Secured Debt InterestExpenseSecuredDebt	52600000	usd
CY2023Q3	us-gaap	Share Price SharePrice	21.75
CY2023Q3	us-gaap	Derivative Assets DerivativeAssets	114558000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	7349000	usd
CY2023Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	328000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	119665000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	72032000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	22498000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Reclassification For Discontinuance Before Tax OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax	384000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Reclassification For Discontinuance Before Tax OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax	459000	usd
CY2023Q3	us-gaap	Interest Expense InterestExpense	354000000.0	usd
	us-gaap	Interest Expense InterestExpense	1000000000.0	usd
CY2023Q3	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	0	usd
CY2022Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	103100000	usd
CY2023Q3	bxmt	Stock Shares Authorized StockSharesAuthorized	500000000	shares
CY2023Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2023Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	bxmt	Common Stock Shares Outstanding Including Stock Equivalents CommonStockSharesOutstandingIncludingStockEquivalents	172106593	shares
CY2021Q4	bxmt	Common Stock Shares Outstanding Including Stock Equivalents CommonStockSharesOutstandingIncludingStockEquivalents	168543370	shares
	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	5079	shares
	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	2308889	shares
	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	489955	shares
	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	407581	shares
	us-gaap	Deferred Compensation Arrangement With Individual Shares Issued DeferredCompensationArrangementWithIndividualSharesIssued	43656	shares
	us-gaap	Deferred Compensation Arrangement With Individual Shares Issued DeferredCompensationArrangementWithIndividualSharesIssued	35940	shares
CY2023Q3	bxmt	Common Stock Shares Outstanding Including Stock Equivalents CommonStockSharesOutstandingIncludingStockEquivalents	172645283	shares
CY2022Q3	bxmt	Common Stock Shares Outstanding Including Stock Equivalents CommonStockSharesOutstandingIncludingStockEquivalents	171295780	shares
CY2023Q3	bxmt	Deferred Stock Units DeferredStockUnits	349232	shares
CY2022Q3	bxmt	Deferred Stock Units DeferredStockUnits	399512	shares
	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	5079	shares
	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	5420	shares
	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	5079	shares
	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	5420	shares
CY2023Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.62
CY2023Q3	us-gaap	Dividends Dividends	106800000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.62
CY2022Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.62
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.86
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.86
CY2023Q3	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	209000	usd
CY2022Q3	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	241000	usd
	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	662000	usd
	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	698000	usd
CY2023Q3	us-gaap	Dividends Dividends	107033000	usd
CY2022Q3	us-gaap	Dividends Dividends	106197000	usd
	us-gaap	Dividends Dividends	321133000	usd
	us-gaap	Dividends Dividends	317812000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	29524000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	103246000	usd
	us-gaap	Net Income Loss NetIncomeLoss	248932000	usd
	us-gaap	Net Income Loss NetIncomeLoss	296183000	usd
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172648118	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	170971874	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172620799	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	170303470	shares
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.44
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.74
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	29524000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	103246000	usd
	us-gaap	Net Income Loss NetIncomeLoss	248932000	usd
	us-gaap	Net Income Loss NetIncomeLoss	296183000	usd
CY2023Q3	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	usd
CY2022Q3	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	5905000	usd
	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	10667000	usd
	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	14218000	usd
CY2023Q3	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	29524000	usd
CY2022Q3	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	109151000	usd
	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	259599000	usd
	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	310401000	usd
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172648118	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	170971874	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172620799	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	170303470	shares
CY2023Q3	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2022Q3	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	14344204	shares
	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	8271060	shares
	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	11708372	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	172648118	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	185316078	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	180891859	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	182011842	shares
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.44
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.71
CY2023Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	10600000	usd
CY2023Q3	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	281800000	usd
CY2023Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-271200000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	10000000	usd
CY2022Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	259800000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-249800000	usd
CY2023Q3	us-gaap	Professional Fees ProfessionalFees	3038000	usd
CY2022Q3	us-gaap	Professional Fees ProfessionalFees	2695000	usd
	us-gaap	Professional Fees ProfessionalFees	9579000	usd
	us-gaap	Professional Fees ProfessionalFees	8086000	usd
CY2023Q3	bxmt	General And Administrative Operating And Other Costs GeneralAndAdministrativeOperatingAndOtherCosts	1357000	usd
CY2022Q3	bxmt	General And Administrative Operating And Other Costs GeneralAndAdministrativeOperatingAndOtherCosts	2018000	usd
	bxmt	General And Administrative Operating And Other Costs GeneralAndAdministrativeOperatingAndOtherCosts	5383000	usd
	bxmt	General And Administrative Operating And Other Costs GeneralAndAdministrativeOperatingAndOtherCosts	4329000	usd
CY2023Q3	bxmt	Core General And Administrative Expenses CoreGeneralAndAdministrativeExpenses	4395000	usd
CY2022Q3	bxmt	Core General And Administrative Expenses CoreGeneralAndAdministrativeExpenses	4713000	usd
	bxmt	Core General And Administrative Expenses CoreGeneralAndAdministrativeExpenses	14962000	usd
	bxmt	Core General And Administrative Expenses CoreGeneralAndAdministrativeExpenses	12415000	usd
CY2023Q3	us-gaap	Restricted Stock Expense RestrictedStockExpense	7434000	usd
CY2022Q3	us-gaap	Restricted Stock Expense RestrictedStockExpense	8046000	usd
	us-gaap	Restricted Stock Expense RestrictedStockExpense	22418000	usd
	us-gaap	Restricted Stock Expense RestrictedStockExpense	24768000	usd
CY2023Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	172000	usd
CY2022Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	173000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	508000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	518000	usd
CY2023Q3	bxmt	Non Cash And Legacy Compensation Expenses NonCashAndLegacyCompensationExpenses	7606000	usd
CY2022Q3	bxmt	Non Cash And Legacy Compensation Expenses NonCashAndLegacyCompensationExpenses	8219000	usd
	bxmt	Non Cash And Legacy Compensation Expenses NonCashAndLegacyCompensationExpenses	22926000	usd
	bxmt	Non Cash And Legacy Compensation Expenses NonCashAndLegacyCompensationExpenses	25286000	usd
CY2023Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12001000	usd
CY2022Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12932000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	37888000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	37701000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1600000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4700000	usd
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1200000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2100000	usd
CY2013Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	25875000	shares
CY2023Q3	bxmt	Operating Loss Carryforwards Limitations On Use Annual Limitation OperatingLossCarryforwardsLimitationsOnUseAnnualLimitation	2000000.0	usd
CY2023Q3	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	159000000.0	usd
CY2023Q3	bxmt	Number Of Current Benefit Plans NumberOfCurrentBenefitPlans	2	plan
CY2023Q3	bxmt	Number Of Benefit Plans NumberOfBenefitPlans	9	plan
CY2023Q3	bxmt	Number Of Expired Benefit Plans NumberOfExpiredBenefitPlans	7	plan
CY2023Q3	bxmt	Securitized Debt Obligations Excluded From Contractual Obligations SecuritizedDebtObligationsExcludedFromContractualObligations	2500000000	usd
CY2023Q3	bxmt	Nonconsolidated Securitized Debt Excluded From Contractual Obligations NonconsolidatedSecuritizedDebtExcludedFromContractualObligations	1100000000	usd
CY2023Q3	bxmt	Net Loan Exposure Amount Loan Participations Sold NetLoanExposureAmountLoanParticipationsSold	275700000	usd
	bxmt	Board Of Directors Number Of Members BoardOfDirectorsNumberOfMembers	10	director
	bxmt	Number Of Directors Eligible For Annual Compensation NumberOfDirectorsEligibleForAnnualCompensation	6	director
	bxmt	Number Of Directors Not Eligible For Compensation NumberOfDirectorsNotEligibleForCompensation	4	director
CY2023Q3	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	421495000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	291340000	usd
CY2023Q3	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	23849497000	usd
CY2022Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	25160343000	usd
CY2023Q3	bxmt	Securitized Debt Obligations Net Face Amount SecuritizedDebtObligationsNetFaceAmount	2512511000	usd
CY2022Q4	bxmt	Securitized Debt Obligations Net Face Amount SecuritizedDebtObligationsNetFaceAmount	2673541000	usd
CY2023Q3	bxmt	Asset Specific Debt Gross AssetSpecificDebtGross	935435000	usd
CY2022Q4	bxmt	Asset Specific Debt Gross AssetSpecificDebtGross	950278000	usd
CY2023Q3	bxmt	Participating Mortgage Loans Participation Liabilities Principal Amount ParticipatingMortgageLoansParticipationLiabilitiesPrincipalAmount	275697000	usd
CY2022Q4	bxmt	Participating Mortgage Loans Participation Liabilities Principal Amount ParticipatingMortgageLoansParticipationLiabilitiesPrincipalAmount	224744000	usd
CY2023Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	139400000	usd
CY2023Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	2790960000	usd
CY2023Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	2114802000	usd
CY2023Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	5563566000	usd
CY2023Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	3939887000	usd
CY2023Q3	bxmt	Long Term Debt Maturity After Year Four LongTermDebtMaturityAfterYearFour	2004043000	usd
CY2023Q3	us-gaap	Long Term Debt LongTermDebt	16552658000	usd
	bxmt	Debt Instrument Amortization Percentage DebtInstrumentAmortizationPercentage	0.010

Files In Submission

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0001061630-23-000068-index-headers.html	Edgar Link	pending
0001061630-23-000068-index.html	Edgar Link	pending
0001061630-23-000068.txt	Edgar Link	pending
0001061630-23-000068-xbrl.zip	Edgar Link	pending
bxmt-20230930.htm	Edgar Link	pending
bxmt-20230930.xsd	Edgar Link	pending
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bxmt-20230930_cal.xml	Edgar Link	unprocessable

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$BXMT
BLACKSTONE MORTGAGE TRUST, INC. Stock $bxmt

2023 Q4 Form 10-Q Financial Statement

#000106163023000068 Filed on October 25, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BXMT BLACKSTONE MORTGAGE TRUST, INC. Stock $bxmt

2023 Q4 Form 10-Q Financial Statement

#000106163023000068 Filed on October 25, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BXMT
BLACKSTONE MORTGAGE TRUST, INC. Stock $bxmt