$SLG
SL GREEN REALTY CORP Stock $slg

$slg Overview Financials Valuation SEC Filings Company Website

2023 Q3 Form 10-Q Financial Statement

#000104097123000031 Filed on August 03, 2023

Income Statement

Concept	2023 Q3	2023 Q2
Revenue	$173.2M	$221.1M
YoY Change	-18.47%	9.74%
Cost Of Revenue	$88.00M	$93.50M
YoY Change	0.56%	21.66%
Gross Profit	$85.20M	$127.6M
YoY Change	-31.81%	2.39%
Gross Profit Margin	49.19%	57.71%
Selling, General & Admin	$22.90M	$23.01M
YoY Change	7.51%	-2.1%
% of Gross Profit	26.88%	18.03%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$52.40M	$71.24M
YoY Change	3.75%	45.89%
% of Gross Profit	61.5%	55.84%
Operating Expenses	$22.90M	$92.09M
YoY Change	7.51%	291.88%
Operating Profit	$62.30M	$35.48M
YoY Change	-39.89%	-64.9%
Interest Expense	$52.88M	-$82.12M
YoY Change	30.39%	-352.19%
% of Operating Profit	84.87%	-231.43%
Other Income/Expense, Net	$400.0K	-$305.9M
YoY Change
Pretax Income	-$21.70M	-$379.2M
YoY Change	-277.71%	899.31%
Income Tax	$2.500M	$2.000M
% Of Pretax Income
Net Earnings	-$20.23M	-$360.6M
YoY Change	-282.0%	798.38%
Net Earnings / Revenue	-11.68%	-163.12%
Basic Earnings Per Share	-$0.38	-$5.63
Diluted Earnings Per Share	-$0.38	-$5.63
COMMON SHARES
Basic Shares Outstanding	64.39M shares	64.38M shares
Diluted Shares Outstanding	68.30M shares	68.34M shares

Balance Sheet

Concept	2023 Q3	2023 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$199.4M	$192.0M
YoY Change	-8.46%	-10.96%
Cash & Equivalents	$189.8M	$192.0M
Short-Term Investments	$9.616M	$9.797M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$310.0M	$326.2M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$500.0M	$518.2M
YoY Change	-4.3%	2.1%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.994B	$4.967B
YoY Change	-33.02%	-9.34%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$3.153B	$3.875B
YoY Change	-1.04%	26.05%
Other Assets	$228.0M	$231.4M
YoY Change	-23.94%	12.05%
Total Long-Term Assets	$9.191B	$9.523B
YoY Change	-24.63%	-6.61%
TOTAL ASSETS
Total Short-Term Assets	$500.0M	$518.2M
Total Long-Term Assets	$9.191B	$9.523B
Total Assets	$9.691B	$10.04B
YoY Change	-23.79%	-6.2%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$146.0M	$116.7M
YoY Change	-16.67%	-19.65%
Accrued Expenses	$905.0M	$906.0M
YoY Change	-2.74%	4.81%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.123B	$1.094B
YoY Change	-4.91%	0.5%
LONG-TERM LIABILITIES
Long-Term Debt	$3.456B	$3.910B
YoY Change	-39.56%	-1.89%
Other Long-Term Liabilities	$589.0M	$456.4M
YoY Change	-0.64%	23.63%
Total Long-Term Liabilities	$4.045B	$4.366B
YoY Change	-35.91%	0.27%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.123B	$1.094B
Total Long-Term Liabilities	$4.045B	$4.366B
Total Liabilities	$5.169B	$5.782B
YoY Change	-31.01%	6.22%
SHAREHOLDERS EQUITY
Retained Earnings	$62.41M	$135.5M
YoY Change	-91.74%	-82.63%
Common Stock	$656.0K	$656.0K
YoY Change	0.15%	0.15%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.040B	$4.259B
YoY Change
Total Liabilities & Shareholders Equity	$9.691B	$10.04B
YoY Change	-23.79%	-6.2%

Cashflow Statement

Concept	2023 Q3	2023 Q2
OPERATING ACTIVITIES
Net Income	-$20.23M	-$360.6M
YoY Change	-282.0%	798.38%
Depreciation, Depletion And Amortization	$52.40M	$71.24M
YoY Change	3.75%	45.89%
Cash From Operating Activities	$77.30M	$61.64M
YoY Change	15.04%	-38.99%
INVESTING ACTIVITIES
Capital Expenditures	$59.80M	$72.27M
YoY Change	-145.12%	-210.72%
Acquisitions
YoY Change
Other Investing Activities	$370.4M	$99.77M
YoY Change	36.92%	-46.68%
Cash From Investing Activities	$310.6M	$27.50M
YoY Change	125.09%	-77.43%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-389.7M	-135.3M
YoY Change	301.07%	-46.53%
NET CHANGE
Cash From Operating Activities	77.30M	61.64M
Cash From Investing Activities	310.6M	27.50M
Cash From Financing Activities	-389.7M	-135.3M
Net Change In Cash	-1.800M	-46.20M
YoY Change	-101.67%	52.7%
FREE CASH FLOW
Cash From Operating Activities	$77.30M	$61.64M
Capital Expenditures	$59.80M	$72.27M
Free Cash Flow	$17.50M	-$10.63M
YoY Change	-91.24%	-106.39%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	191979000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	203273000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	180781000	usd
CY2023Q2	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	36657000	usd
CY2023Q2	us-gaap	Other Receivables OtherReceivables	28955000	usd
CY2022Q4	us-gaap	Other Receivables OtherReceivables	27352000	usd
CY2023Q2	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	260625000	usd
CY2022Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	257887000	usd
CY2023Q2	slg	Discount Of Structured Finance Investments DiscountOfStructuredFinanceInvestments	1645000	usd
CY2022Q4	slg	Discount Of Structured Finance Investments DiscountOfStructuredFinanceInvestments	1811000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	13520000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	6630000	usd
CY2023Q2	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	636476000	usd
CY2022Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	623280000	usd
CY2023Q2	us-gaap	Equity Method Investments EquityMethodInvestments	3228663000	usd
CY2022Q4	us-gaap	Equity Method Investments EquityMethodInvestments	3190137000	usd
CY2023Q2	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	112347000	usd
CY2022Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	121157000	usd
CY2023Q2	us-gaap	Other Assets OtherAssets	449606000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	546945000	usd
CY2023Q2	us-gaap	Assets Assets	10041288000	usd
CY2022Q4	us-gaap	Assets Assets	12355794000	usd
CY2023Q2	us-gaap	Secured Debt SecuredDebt	1513406000	usd
CY2022Q4	us-gaap	Secured Debt SecuredDebt	3227563000	usd
CY2023Q2	us-gaap	Line Of Credit LineOfCredit	423985000	usd
CY2022Q4	us-gaap	Line Of Credit LineOfCredit	443217000	usd
CY2023Q2	us-gaap	Senior Notes SeniorNotes	1667784000	usd
CY2022Q4	us-gaap	Senior Notes SeniorNotes	1641552000	usd
CY2023Q2	us-gaap	Unsecured Debt UnsecuredDebt	99744000	usd
CY2022Q4	us-gaap	Unsecured Debt UnsecuredDebt	99692000	usd
CY2023Q2	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	15711000	usd
CY2022Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	14227000	usd
CY2023Q2	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	116700000	usd
CY2022Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	154867000	usd
CY2023Q2	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	125589000	usd
CY2022Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	272248000	usd
CY2023Q2	us-gaap	Finance Lease Liability FinanceLeaseLiability	104870000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	104218000	usd
CY2023Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	890305000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	895100000	usd
CY2023Q2	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	21750000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	21569000	usd
CY2023Q2	us-gaap	Security Deposit Liability SecurityDepositLiability	49877000	usd
CY2022Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	50472000	usd
CY2023Q2	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	100000000	usd
CY2022Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	100000000	usd
CY2023Q2	us-gaap	Liabilities Liabilities	5460520000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	7260936000	usd
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	221932000	usd
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	160000000	shares
CY2023Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	160000000	shares
CY2023Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	65447000	shares
CY2023Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	65447000	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	65440000	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	65440000	shares
CY2023Q2	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	1060000	shares
CY2022Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	1060000	shares
CY2023Q2	us-gaap	Common Stock Value CommonStockValue	656000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	656000	usd
CY2023Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	3805704000	usd
CY2022Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	3790358000	usd
CY2023Q2	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	128655000	usd
CY2022Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	128655000	usd
CY2023Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	57769000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	49604000	usd
CY2023Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	135518000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	651138000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	4092924000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	4585033000	usd
CY2023Q2	us-gaap	Nonredeemable Noncontrolling Interest NonredeemableNoncontrollingInterest	66909000	usd
CY2022Q4	us-gaap	Nonredeemable Noncontrolling Interest NonredeemableNoncontrollingInterest	61889000	usd
CY2023Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4159833000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4646922000	usd
CY2023Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	10041288000	usd
CY2023Q2	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	185945000	usd
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	380987000	usd
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	311263000	usd
CY2023Q2	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	9103000	usd
CY2022Q2	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	20407000	usd
	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	18160000	usd
	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	40295000	usd
CY2023Q2	us-gaap	Other Income OtherIncome	26022000	usd
CY2022Q2	us-gaap	Other Income OtherIncome	25806000	usd
	us-gaap	Revenues Revenues	444645000	usd
	us-gaap	Revenues Revenues	389409000	usd
CY2023Q2	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	46957000	usd
CY2022Q2	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	39557000	usd
	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	99021000	usd
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4175000	usd
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3865000	usd
CY2023Q2	us-gaap	Depreciation And Amortization DepreciationAndAmortization	69084000	usd
CY2022Q2	us-gaap	Depreciation And Amortization DepreciationAndAmortization	46914000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	147632000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	93897000	usd
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	0	usd
CY2022Q2	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	0	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	6890000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	0	usd
CY2023Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	33000	usd
CY2022Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1000	usd
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	917000	usd
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	29000	usd
CY2023Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	22974000	usd
CY2022Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	23522000	usd
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	46259000	usd
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	48298000	usd
CY2023Q2	slg	Total Costs And Expenses Including Nonoperating Income Expense TotalCostsAndExpensesIncludingNonoperatingIncomeExpense	228363000	usd
CY2022Q2	slg	Total Costs And Expenses Including Nonoperating Income Expense TotalCostsAndExpensesIncludingNonoperatingIncomeExpense	164167000	usd
	slg	Total Costs And Expenses Including Nonoperating Income Expense TotalCostsAndExpensesIncludingNonoperatingIncomeExpense	481392000	usd
CY2022Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-4550000	usd
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-29344000	usd
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-9265000	usd
CY2023Q2	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	usd
	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-131000	usd
CY2023Q2	slg	Gain Loss On Purchase Price Fair Value Adjustment Gross GainLossOnPurchasePriceFairValueAdjustmentGross	-17409000	usd
CY2022Q2	slg	Gain Loss On Purchase Price Fair Value Adjustment Gross GainLossOnPurchasePriceFairValueAdjustmentGross	-6168000	usd
	slg	Gain Loss On Purchase Price Fair Value Adjustment Gross GainLossOnPurchasePriceFairValueAdjustmentGross	-17170000	usd
	slg	Gain Loss On Purchase Price Fair Value Adjustment Gross GainLossOnPurchasePriceFairValueAdjustmentGross	-6231000	usd
	us-gaap	Profit Loss ProfitLoss	-417585000	usd
	us-gaap	Profit Loss ProfitLoss	-24464000	usd
CY2023Q2	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	-23582000	usd
CY2022Q2	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	-2813000	usd
	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	-25919000	usd
	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	-2321000	usd
CY2023Q2	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Redeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable	-1040000	usd
CY2022Q2	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Redeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable	3404000	usd
	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Redeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable	-2665000	usd
	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Redeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable	3261000	usd
CY2023Q2	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	1851000	usd
CY2022Q2	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	1599000	usd
	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	3449000	usd
	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	3246000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	-356457000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	-40139000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-392450000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-28650000	usd
CY2023Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3737000	usd
CY2022Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3737000	usd
CY2023Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-360194000	usd
CY2022Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-43876000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-399925000	usd
CY2023Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.63
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.70
CY2023Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-5.63
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	63987000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	68263000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	69422000	shares
CY2022Q2	us-gaap	Profit Loss ProfitLoss	-37949000	usd
	us-gaap	Profit Loss ProfitLoss	-417585000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15856000	usd
CY2022Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3737000	usd
CY2022Q2	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	110000	usd
CY2022Q2	slg	Reallocationof Noncontrolling Interest In Operating Partnership Increase Decrease ReallocationofNoncontrollingInterestInOperatingPartnershipIncreaseDecrease	37938000	usd
CY2022Q2	slg	Deferred Compensation Plan And Stock Award Net DeferredCompensationPlanAndStockAwardNet	8475000	usd
CY2022Q2	slg	Consolidation Of Joint Venture Interest ConsolidationOfJointVentureInterest	51348000	usd
CY2022Q2	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2897000	usd
CY2022Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.932
CY2022Q2	us-gaap	Dividends Common Stock DividendsCommonStock	60709000	usd
CY2022Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4748764000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4646922000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	41322000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	10263000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	60890000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-476000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-454000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-1444000	usd
CY2022Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-21080000	usd
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-408766000	usd
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	34179000	usd
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-25135000	usd
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4186000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	2505000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	1013000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	654000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	3290000	usd
CY2023Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-318116000	usd
CY2022Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-24283000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-384285000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	26703000	usd
CY2023Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4529174000	usd
CY2023Q2	slg	Profit Loss Less Minority Interest In Net Income Loss Operating Partnerships ProfitLossLessMinorityInterestInNetIncomeLossOperatingPartnerships	-357497000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	38341000	usd
CY2023Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3737000	usd
CY2023Q2	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	158000	usd
CY2023Q2	slg	Reallocationof Noncontrolling Interest In Operating Partnership Increase Decrease ReallocationofNoncontrollingInterestInOperatingPartnershipIncreaseDecrease	-1051000	usd
CY2023Q2	slg	Deferred Compensation Plan And Stock Award Net DeferredCompensationPlanAndStockAwardNet	7445000	usd
CY2023Q2	slg	Consolidation Of Joint Venture Interest ConsolidationOfJointVentureInterest	-112000	usd
CY2023Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.812
CY2023Q2	us-gaap	Dividends Common Stock DividendsCommonStock	52261000	usd
CY2023Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4159833000	usd
CY2022Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4739115000	usd
CY2022Q2	slg	Profit Loss Less Minority Interest In Net Income Loss Operating Partnerships ProfitLossLessMinorityInterestInNetIncomeLossOperatingPartnerships	-36735000	usd
	slg	Profit Loss Less Minority Interest In Net Income Loss Operating Partnerships ProfitLossLessMinorityInterestInNetIncomeLossOperatingPartnerships	-395115000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	8165000	usd
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7475000	usd
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	342000	usd
	slg	Reallocationof Noncontrolling Interest In Operating Partnership Increase Decrease ReallocationofNoncontrollingInterestInOperatingPartnershipIncreaseDecrease	-11198000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4778253000	usd
	slg	Profit Loss Less Minority Interest In Net Income Loss Operating Partnerships ProfitLossLessMinorityInterestInNetIncomeLossOperatingPartnerships	-25389000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	55353000	usd
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7475000	usd
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	199000	usd
	slg	Reallocationof Noncontrolling Interest In Operating Partnership Increase Decrease ReallocationofNoncontrollingInterestInOperatingPartnershipIncreaseDecrease	-5085000	usd
	slg	Deferred Compensation Plan And Stock Award Net DeferredCompensationPlanAndStockAwardNet	13531000	usd
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	151197000	usd
	slg	Consolidation Of Joint Venture Interest ConsolidationOfJointVentureInterest	51348000	usd
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	3020000	usd
	us-gaap	Stock Issued During Period Value Stock Dividend StockIssuedDuringPeriodValueStockDividend	160620000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.865
	us-gaap	Dividends Common Stock DividendsCommonStock	118374000	usd
CY2022Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4748764000	usd
	us-gaap	Profit Loss ProfitLoss	-417585000	usd
	us-gaap	Profit Loss ProfitLoss	-24464000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	151807000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	97762000	usd
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-29344000	usd
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-9265000	usd
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	409000	usd
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	343000	usd
	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-79000	usd
	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-131000	usd
	slg	Purchase Price Fair Value Adjustment Gain Loss PurchasePriceFairValueAdjustmentGainLoss	-17170000	usd
	slg	Purchase Price Fair Value Adjustment Gain Loss PurchasePriceFairValueAdjustmentGainLoss	-6231000	usd
	slg	Depreciable Real Estate Reserves Cash Flow Effect DepreciableRealEstateReservesCashFlowEffect	-305916000	usd
	slg	Depreciable Real Estate Reserves Cash Flow Effect DepreciableRealEstateReservesCashFlowEffect	0	usd
	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-28329000	usd
	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-65380000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	6890000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	0	usd
	us-gaap	Straight Line Rent StraightLineRent	14357000	usd
	us-gaap	Straight Line Rent StraightLineRent	-1075000	usd
	slg	Non Cash Lease Expense NonCashLeaseExpense	10550000	usd
	slg	Non Cash Lease Expense NonCashLeaseExpense	12080000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	2523000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	10406000	usd
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	3805000	usd
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-14767000	usd
	us-gaap	Increase Decrease In Due From Related Parties Current IncreaseDecreaseInDueFromRelatedPartiesCurrent	893000	usd
	us-gaap	Increase Decrease In Due From Related Parties Current IncreaseDecreaseInDueFromRelatedPartiesCurrent	-1458000	usd
	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	5891000	usd
	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	6922000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1235000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2651000	usd
	slg	Increase Decrease In Accrued Liabilities And Other IncreaseDecreaseInAccruedLiabilitiesAndOther	2697000	usd
	slg	Increase Decrease In Accrued Liabilities And Other IncreaseDecreaseInAccruedLiabilitiesAndOther	19767000	usd
	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	-585000	usd
	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	-2672000	usd
	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-4795000	usd
	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	1291000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	103992000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	182435000	usd
	slg	Payments To Acquire Land Buildings And Improvements PaymentsToAcquireLandBuildingsAndImprovements	134190000	usd
	slg	Payments To Acquire Land Buildings And Improvements PaymentsToAcquireLandBuildingsAndImprovements	126957000	usd
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	46977000	usd
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	135365000	usd
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	72823000	usd
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	64976000	usd
	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	97563000	usd
	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	353853000	usd
	slg	Payments For Proceeds From Other Investments PaymentsForProceedsFromOtherInvestments	17779000	usd
	slg	Payments For Proceeds From Other Investments PaymentsForProceedsFromOtherInvestments	-1507000	usd
	slg	Origination Of Debt And Preferred Equity Investments OriginationOfDebtAndPreferredEquityInvestments	10308000	usd
	slg	Origination Of Debt And Preferred Equity Investments OriginationOfDebtAndPreferredEquityInvestments	29095000	usd
	slg	Repayments Or Redemption Of Debt And Preferred Equity Investments RepaymentsOrRedemptionOfDebtAndPreferredEquityInvestments	0	usd
	slg	Repayments Or Redemption Of Debt And Preferred Equity Investments RepaymentsOrRedemptionOfDebtAndPreferredEquityInvestments	6405000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-38868000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	135324000	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	184196000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	2899000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	91770000	usd
	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	332000000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	11700000	usd
	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	17968000	usd
	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	5250000	usd
	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	18334000	usd
	slg	Distributions To Noncontrolling Interests Other Partnerships DistributionsToNoncontrollingInterestsOtherPartnerships	763000	usd
	slg	Distributions To Noncontrolling Interests Other Partnerships DistributionsToNoncontrollingInterestsOtherPartnerships	3020000	usd
	slg	Proceeds From Noncontrolling Interests In Other Partnerships ProceedsFromNoncontrollingInterestsInOtherPartnerships	314000	usd
	slg	Proceeds From Noncontrolling Interests In Other Partnerships ProceedsFromNoncontrollingInterestsInOtherPartnerships	51348000	usd
	slg	Distribution To Noncontrolling Interest Operating Partnership DistributionToNoncontrollingInterestOperatingPartnership	7550000	usd
	slg	Distribution To Noncontrolling Interest Operating Partnership DistributionToNoncontrollingInterestOperatingPartnership	8572000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	114983000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	131556000	usd
	slg	Proceeds From Other Obligation Related To Secured Borrowing ProceedsFromOtherObligationRelatedToSecuredBorrowing	0	usd
	slg	Proceeds From Other Obligation Related To Secured Borrowing ProceedsFromOtherObligationRelatedToSecuredBorrowing	77874000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3891000	usd
	slg	Proceeds From Payments Of Financing Costs ProceedsFromPaymentsOfFinancingCosts	630000	usd
	slg	Proceeds From Payments Of Financing Costs ProceedsFromPaymentsOfFinancingCosts	4991000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-138119000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-377682000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-72995000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-59923000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	384054000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	336984000	usd
CY2023Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	311059000	usd
CY2022Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	277061000	usd
	slg	Issuance Of Special Dividend Stock Dividend IssuanceOfSpecialDividendStockDividend	0	usd
	slg	Issuance Of Special Dividend Stock Dividend IssuanceOfSpecialDividendStockDividend	160620000	usd
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	0	usd
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	10295000	usd
	slg	Operating Partnership Noncontrolling Interest Fair Value Adjustment OperatingPartnershipNoncontrollingInterestFairValueAdjustment	11198000	usd
	slg	Operating Partnership Noncontrolling Interest Fair Value Adjustment OperatingPartnershipNoncontrollingInterestFairValueAdjustment	5085000	usd
	slg	Deconsolidation Real Estate Investments DeconsolidationRealEstateInvestments	101351000	usd
	slg	Deconsolidation Real Estate Investments DeconsolidationRealEstateInvestments	0	usd
	slg	Contribution To Consolidated Joint Venture Interest ContributionToConsolidatedJointVentureInterest	8134000	usd
	slg	Contribution To Consolidated Joint Venture Interest ContributionToConsolidatedJointVentureInterest	0	usd
	slg	Removalof Fully Depreciated Real Estate Assets RemovalofFullyDepreciatedRealEstateAssets	7747000	usd
	slg	Removalof Fully Depreciated Real Estate Assets RemovalofFullyDepreciatedRealEstateAssets	3597000	usd
CY2023Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	191979000	usd
CY2022Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	189360000	usd
CY2023Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	119080000	usd
CY2022Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	87701000	usd
CY2023Q2	slg	Numberof Real Estate Buildings NumberofRealEstateBuildings	51	building
CY2023Q2	us-gaap	Area Of Real Estate Property AreaOfRealEstateProperty	29708910	sqft
CY2023Q2	slg	Mortgage Loanson Real Estate Commercialand Consumer Net Including Debt Investments Other MortgageLoansonRealEstateCommercialandConsumerNetIncludingDebtInvestmentsOther	636500000	usd
CY2023Q2	slg	Debt Investments Other DebtInvestmentsOther	8500000	usd
	slg	Number Of Shares On Redemption Of One Unit Of Partnership Interest NumberOfSharesOnRedemptionOfOneUnitOfPartnershipInterest	1	shares
CY2023Q2	slg	Rental Revenue Increase Decrease Acquired Lease Amortization RentalRevenueIncreaseDecreaseAcquiredLeaseAmortization	-6200000	usd
	slg	Rental Revenue Increase Decrease Acquired Lease Amortization RentalRevenueIncreaseDecreaseAcquiredLeaseAmortization	-14500000	usd
CY2022Q2	slg	Rental Revenue Increase Decrease Acquired Lease Amortization RentalRevenueIncreaseDecreaseAcquiredLeaseAmortization	-200000	usd
	slg	Rental Revenue Increase Decrease Acquired Lease Amortization RentalRevenueIncreaseDecreaseAcquiredLeaseAmortization	-300000	usd
CY2023Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	189680000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	403552000	usd
CY2023Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	183769000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	190066000	usd
CY2023Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	5911000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	213486000	usd
CY2023Q2	slg	Finite Lived Intangible Liabilities Gross FiniteLivedIntangibleLiabilitiesGross	205394000	usd
CY2022Q4	slg	Finite Lived Intangible Liabilities Gross FiniteLivedIntangibleLiabilitiesGross	361338000	usd
CY2023Q2	slg	Finite Lived Intangible Liabilities Accumulated Amortization FiniteLivedIntangibleLiabilitiesAccumulatedAmortization	201911000	usd
CY2022Q4	slg	Finite Lived Intangible Liabilities Accumulated Amortization FiniteLivedIntangibleLiabilitiesAccumulatedAmortization	212191000	usd
CY2023Q2	slg	Finite Lived Intangible Liabilities Net FiniteLivedIntangibleLiabilitiesNet	3483000	usd
CY2022Q4	slg	Finite Lived Intangible Liabilities Net FiniteLivedIntangibleLiabilitiesNet	149147000	usd
CY2023Q2	us-gaap	Marketable Securities MarketableSecurities	9797000	usd
CY2022Q4	us-gaap	Marketable Securities MarketableSecurities	11240000	usd
CY2022Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023Q2	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	0	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	0	usd
CY2022Q2	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-6200000	usd
	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-6200000	usd
CY2023Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2700000	usd
CY2022Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1400000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2300000	usd
	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:6pt;text-align:justify;text-indent:24.75pt"><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 accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.</span></div>
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-bottom:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Concentrations of Credit Risk</span></div><div style="margin-bottom:6pt;text-align:justify;text-indent:24.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash investments, debt and preferred equity investments and accounts receivable. We place our cash investments with high quality financial institutions. The collateral securing our debt and preferred equity investments is located in New York City. See Note 5, "Debt and Preferred Equity Investments." </span></div>We perform initial and ongoing evaluations of the credit quality of our tenants and require most tenants to provide security deposits or letters of credit. Though these security deposits and letters of credit are insufficient to meet the total value of a tenant's lease obligation, they are a measure of good faith and a potential source of funds to offset the economic costs associated with lost revenue from that tenant and the costs associated with re-tenanting a space.
	slg	Number Of Real Estate Properties Acquired From Third Party NumberOfRealEstatePropertiesAcquiredFromThirdParty	0	property
CY2023Q2	slg	Equity Method Investment Ownership Percentage Deconsolidated EquityMethodInvestmentOwnershipPercentageDeconsolidated	0.501
CY2023Q2	us-gaap	Assets Fair Value Adjustment AssetsFairValueAdjustment	17000000	usd
CY2022Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	623280000	usd
CY2021Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	1088723000	usd
	us-gaap	Mortgage Loans On Real Estate Amortization Of Premium MortgageLoansOnRealEstateAmortizationOfPremium	0	usd
CY2022	us-gaap	Mortgage Loans On Real Estate Amortization Of Premium MortgageLoansOnRealEstateAmortizationOfPremium	565940000	usd
	slg	Sec Schedule1229 Real Estate Companies Investment In Mortgage Loans On Real Estate Loan Loss Reserve Period Increase Decrease SECSchedule1229RealEstateCompaniesInvestmentInMortgageLoansOnRealEstateLoanLossReservePeriodIncreaseDecrease	-6890000	usd
CY2022	slg	Sec Schedule1229 Real Estate Companies Investment In Mortgage Loans On Real Estate Loan Loss Reserve Period Increase Decrease SECSchedule1229RealEstateCompaniesInvestmentInMortgageLoansOnRealEstateLoanLossReservePeriodIncreaseDecrease	0	usd
CY2023Q2	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	636476000	usd
CY2022Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	623280000	usd
	srt	Mortgage Loans On Real Estate Interest Rate MortgageLoansOnRealEstateInterestRate	0.0596
CY2023Q2	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	636476000	usd
CY2023Q2	slg	Mortgage Loanson Real Estate Senior Financing MortgageLoansonRealEstateSeniorFinancing	1974174000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	6630000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	6630000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	6890000	usd
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	0	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	13520000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	6630000	usd
CY2023Q2	slg	Financing Receivable Nonaccrual No Allowance Number FinancingReceivableNonaccrualNoAllowanceNumber	2	loan
CY2023Q2	slg	Number Of Investments Nonperforming NumberOfInvestmentsNonperforming	4	investment
CY2022Q4	slg	Number Of Investments Nonperforming NumberOfInvestmentsNonperforming	1	investment
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	636476000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	623280000	usd
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	0	usd
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	0	usd
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	82752000	usd
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	553724000	usd
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	636476000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	6900000	usd
CY2022	slg	Financing Receivable Portfolio Segments Number FinancingReceivablePortfolioSegmentsNumber	1	segment
	slg	Financing Receivable Portfolio Segments Number FinancingReceivablePortfolioSegmentsNumber	1	segment
CY2023Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	5800000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	usd
	srt	Mortgage Loans On Real Estate Interest Rate MortgageLoansOnRealEstateInterestRate	0.0596
CY2023Q2	slg	Variable Interest Entity Not Primary Beneficiary Investment VariableInterestEntityNotPrimaryBeneficiaryInvestment	78700000	usd
CY2022Q4	slg	Variable Interest Entity Not Primary Beneficiary Investment VariableInterestEntityNotPrimaryBeneficiaryInvestment	86200000	usd
CY2023Q2	slg	Equity Method Investment Ownership Percentage Deconsolidated EquityMethodInvestmentOwnershipPercentageDeconsolidated	0.501
CY2023Q2	us-gaap	Assets Fair Value Adjustment AssetsFairValueAdjustment	17000000	usd
CY2022Q4	us-gaap	Equity Method Investments EquityMethodInvestments	3190137000	usd
CY2023Q2	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	552300000	usd
CY2023Q2	us-gaap	Deferred Costs Leasing Gross DeferredCostsLeasingGross	390665000	usd
CY2022Q4	us-gaap	Deferred Costs Leasing Gross DeferredCostsLeasingGross	407188000	usd
CY2023Q2	slg	Accumulated Amortization Of Deferred Costs AccumulatedAmortizationOfDeferredCosts	278318000	usd
CY2022Q4	slg	Accumulated Amortization Of Deferred Costs AccumulatedAmortizationOfDeferredCosts	286031000	usd
CY2023Q2	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	112347000	usd
CY2022Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	121157000	usd
CY2023Q2	slg	Secured Debt Bearing Fixed Interest Amount SecuredDebtBearingFixedInterestAmount	1450165000	usd
CY2022Q4	slg	Secured Debt Bearing Fixed Interest Amount SecuredDebtBearingFixedInterestAmount	3165814000	usd
CY2023Q2	slg	Secured Debt Bearing Variable Interest Amount SecuredDebtBearingVariableInterestAmount	70148000	usd
CY2022Q4	slg	Secured Debt Bearing Variable Interest Amount SecuredDebtBearingVariableInterestAmount	70148000	usd
CY2023Q2	slg	Secured Debt Gross SecuredDebtGross	1520313000	usd
CY2022Q4	slg	Secured Debt Gross SecuredDebtGross	3235962000	usd
CY2023Q2	slg	Secured Debt Deferred Finance Costs Net SecuredDebtDeferredFinanceCostsNet	6907000	usd
CY2022Q4	slg	Secured Debt Deferred Finance Costs Net SecuredDebtDeferredFinanceCostsNet	8399000	usd
CY2023Q2	us-gaap	Secured Debt SecuredDebt	1513406000	usd
CY2022Q4	us-gaap	Secured Debt SecuredDebt	3227563000	usd
CY2023Q2	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	1900000000	usd
CY2022Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	3800000000	usd
CY2023Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	263076000	usd
CY2023Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	962237000	usd
CY2023Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	470000000	usd
CY2023Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	0	usd
CY2023Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1980000000	usd
CY2023Q2	slg	Long Term Debt Maturity After Year Four LongTermDebtMaturityAfterYearFour	150000000	usd
CY2023Q2	slg	Long Term Debt Maturities Repayments Of Principal LongTermDebtMaturitiesRepaymentsOfPrincipal	3825313000	usd
CY2023Q2	us-gaap	Interest Expense InterestExpense	65932000	usd
CY2022Q2	us-gaap	Interest Expense InterestExpense	32561000	usd
	us-gaap	Interest Expense InterestExpense	130774000	usd
	us-gaap	Interest Expense InterestExpense	64613000	usd
CY2023Q2	slg	Finance Lease Interest Expense Before Capitalized Interest FinanceLeaseInterestExpenseBeforeCapitalizedInterest	1110000	usd
CY2022Q2	slg	Finance Lease Interest Expense Before Capitalized Interest FinanceLeaseInterestExpenseBeforeCapitalizedInterest	1116000	usd
	slg	Finance Lease Interest Expense Before Capitalized Interest FinanceLeaseInterestExpenseBeforeCapitalizedInterest	2216000	usd
	slg	Finance Lease Interest Expense Before Capitalized Interest FinanceLeaseInterestExpenseBeforeCapitalizedInterest	2353000	usd
CY2023Q2	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	26969000	usd
CY2022Q2	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	18351000	usd
	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	52433000	usd
	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	36292000	usd
CY2023Q2	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1355000	usd
CY2022Q2	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	usd
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	2842000	usd
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	usd
CY2023Q2	us-gaap	Interest Income Operating InterestIncomeOperating	807000	usd
CY2022Q2	us-gaap	Interest Income Operating InterestIncomeOperating	366000	usd
	us-gaap	Interest Income Operating InterestIncomeOperating	1125000	usd
	us-gaap	Interest Income Operating InterestIncomeOperating	644000	usd
CY2023Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-40621000	usd
CY2022Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-14960000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-82274000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-30030000	usd
CY2023Q2	slg	Total Shares Authorized TotalSharesAuthorized	260000000	shares
CY2023Q2	slg	Total Par Or Stated Value Per Share TotalParOrStatedValuePerShare	0.01
CY2023Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	160000000	shares
CY2023Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q2	us-gaap	Excess Stock Shares Authorized ExcessStockSharesAuthorized	75000000	shares
CY2023Q2	slg	Excess Stock Par Or Stated Value Per Share ExcessStockParOrStatedValuePerShare	0.01
CY2023Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000	shares
CY2023Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2023Q2	us-gaap	Excess Stock Shares Issued ExcessStockSharesIssued	0	shares
CY2023Q2	us-gaap	Excess Stock Shares Outstanding ExcessStockSharesOutstanding	0	shares
CY2017	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	7865206	shares
CY2017	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	107.81
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	9187480	shares
CY2018	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	102.06
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	4333260	shares
CY2019	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	88.69
CY2020	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	8276032	shares
CY2020	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	64.30
CY2021	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	4474649	shares
CY2021	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	75.44
CY2022	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1971092	shares
CY2022	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	76.69
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
CY2023Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-360194000	usd
CY2022Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-43876000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-399925000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-36125000	usd
CY2023Q2	us-gaap	Distributed Earnings DistributedEarnings	407000	usd
CY2022Q2	us-gaap	Distributed Earnings DistributedEarnings	497000	usd
	us-gaap	Distributed Earnings DistributedEarnings	813000	usd
	us-gaap	Distributed Earnings DistributedEarnings	995000	usd
CY2023Q2	slg	Net Income Loss Available To Common Stockholders After Distributed And Undistributed Earnings Allocation Basic NetIncomeLossAvailableToCommonStockholdersAfterDistributedAndUndistributedEarningsAllocationBasic	-360601000	usd
CY2022Q2	slg	Net Income Loss Available To Common Stockholders After Distributed And Undistributed Earnings Allocation Basic NetIncomeLossAvailableToCommonStockholdersAfterDistributedAndUndistributedEarningsAllocationBasic	-44373000	usd
	slg	Net Income Loss Available To Common Stockholders After Distributed And Undistributed Earnings Allocation Basic NetIncomeLossAvailableToCommonStockholdersAfterDistributedAndUndistributedEarningsAllocationBasic	-400738000	usd
	slg	Net Income Loss Available To Common Stockholders After Distributed And Undistributed Earnings Allocation Basic NetIncomeLossAvailableToCommonStockholdersAfterDistributedAndUndistributedEarningsAllocationBasic	-37120000	usd
CY2023Q2	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	usd
CY2022Q2	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	1103000	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	806000	usd
CY2023Q2	us-gaap	Dilutive Securities Effect On Basic Earnings Per Share Other DilutiveSecuritiesEffectOnBasicEarningsPerShareOther	-24081000	usd
CY2022Q2	us-gaap	Dilutive Securities Effect On Basic Earnings Per Share Other DilutiveSecuritiesEffectOnBasicEarningsPerShareOther	-2813000	usd
	us-gaap	Dilutive Securities Effect On Basic Earnings Per Share Other DilutiveSecuritiesEffectOnBasicEarningsPerShareOther	-25919000	usd
	us-gaap	Dilutive Securities Effect On Basic Earnings Per Share Other DilutiveSecuritiesEffectOnBasicEarningsPerShareOther	-2321000	usd
CY2023Q2	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-384682000	usd
CY2022Q2	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-48289000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-426657000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-40247000	usd
CY2023Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64102000	shares
CY2022Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	63798000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64091000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	63987000	shares
CY2023Q2	slg	Incremental Common Shares Attributable To Redemption Of Units To Common Shares IncrementalCommonSharesAttributableToRedemptionOfUnitsToCommonShares	4239000	shares
CY2022Q2	slg	Incremental Common Shares Attributable To Redemption Of Units To Common Shares IncrementalCommonSharesAttributableToRedemptionOfUnitsToCommonShares	4102000	shares
	slg	Incremental Common Shares Attributable To Redemption Of Units To Common Shares IncrementalCommonSharesAttributableToRedemptionOfUnitsToCommonShares	4172000	shares
	slg	Incremental Common Shares Attributable To Redemption Of Units To Common Shares IncrementalCommonSharesAttributableToRedemptionOfUnitsToCommonShares	4112000	shares
CY2023Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2022Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1120000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1139000	shares
CY2023Q2	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	shares
CY2022Q2	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	shares
	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	shares
	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	184000	shares
CY2023Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	68341000	shares
CY2022Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	69020000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	68263000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	69422000	shares
CY2023Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1529312	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1381565	shares
CY2022Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	528607	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	482130	shares
CY2023Q2	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	300000	usd
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	700000	usd
CY2022Q2	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	600000	usd
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	900000	usd
CY2023Q2	slg	Other Comprehensive Income Loss Deferred Net Lossfrom Terminated Hedges OtherComprehensiveIncomeLossDeferredNetLossfromTerminatedHedges	-400000	usd
CY2022Q4	slg	Other Comprehensive Income Loss Deferred Net Lossfrom Terminated Hedges OtherComprehensiveIncomeLossDeferredNetLossfromTerminatedHedges	-500000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	9797000	usd
CY2023Q2	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	67060000	usd
CY2023Q2	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	9826000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	11240000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	57660000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	10142000	usd
CY2023Q2	slg	Equity Method Investment Ownership Percentage Deconsolidated EquityMethodInvestmentOwnershipPercentageDeconsolidated	0.501
	us-gaap	Assets Fair Value Adjustment AssetsFairValueAdjustment	17000000	usd
CY2023Q2	us-gaap	Assets Fair Value Adjustment AssetsFairValueAdjustment	17000000	usd
CY2023Q2	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	10800000	usd
CY2023Q2	us-gaap	Assets Needed For Immediate Settlement Aggregate Fair Value AssetsNeededForImmediateSettlementAggregateFairValue	10800000	usd
	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-49200000	usd
	slg	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months Into Equity In Net Income CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsIntoEquityInNetIncome	-15100000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	56662000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	14622000	usd
CY2023Q2	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	-15340000	usd
CY2022Q2	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	2701000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	37254000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	53307000	usd
	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	-26991000	usd
	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	7583000	usd
CY2023Q2	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	159437000	usd
CY2022Q2	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	136673000	usd
	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	325790000	usd
	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	273255000	usd
CY2023Q2	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	20294000	usd
CY2022Q2	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	18738000	usd
	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	40744000	usd
	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	38293000	usd
CY2023Q2	slg	Operating Lease Lease Income Fixed And Variable Lease Payments OperatingLeaseLeaseIncomeFixedAndVariableLeasePayments	179731000	usd
CY2022Q2	slg	Operating Lease Lease Income Fixed And Variable Lease Payments OperatingLeaseLeaseIncomeFixedAndVariableLeasePayments	155411000	usd
	slg	Operating Lease Lease Income Fixed And Variable Lease Payments OperatingLeaseLeaseIncomeFixedAndVariableLeasePayments	366534000	usd
	slg	Operating Lease Lease Income Fixed And Variable Lease Payments OperatingLeaseLeaseIncomeFixedAndVariableLeasePayments	311548000	usd
CY2023Q2	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	6214000	usd
CY2022Q2	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-179000	usd
	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	14453000	usd
	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-285000	usd
CY2023Q2	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	185945000	usd
CY2022Q2	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	155232000	usd
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	380987000	usd
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	311263000	usd
CY2023Q2	us-gaap	Sublease Income SubleaseIncome	48900000	usd
	us-gaap	Sublease Income SubleaseIncome	97800000	usd
CY2022Q2	us-gaap	Sublease Income SubleaseIncome	58000000	usd
	us-gaap	Sublease Income SubleaseIncome	114200000	usd
CY2023Q2	us-gaap	Sales Type Lease Interest Income SalesTypeLeaseInterestIncome	1109000	usd
CY2022Q2	us-gaap	Sales Type Lease Interest Income SalesTypeLeaseInterestIncome	1095000	usd
	us-gaap	Sales Type Lease Interest Income SalesTypeLeaseInterestIncome	2215000	usd
	us-gaap	Sales Type Lease Interest Income SalesTypeLeaseInterestIncome	2187000	usd
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2023Q2	us-gaap	Revenues Revenues	221070000	usd
CY2022Q2	us-gaap	Revenues Revenues	201445000	usd
	us-gaap	Revenues Revenues	444645000	usd
	us-gaap	Revenues Revenues	389409000	usd
CY2023Q2	slg	Income Loss From Continuing Operations Before Realized Gain Loss On Disposal Of Equity Method Investment IncomeLossFromContinuingOperationsBeforeRealizedGainLossOnDisposalOfEquityMethodInvestment	-379228000	usd
CY2022Q2	slg	Income Loss From Continuing Operations Before Realized Gain Loss On Disposal Of Equity Method Investment IncomeLossFromContinuingOperationsBeforeRealizedGainLossOnDisposalOfEquityMethodInvestment	-37949000	usd
	slg	Income Loss From Continuing Operations Before Realized Gain Loss On Disposal Of Equity Method Investment IncomeLossFromContinuingOperationsBeforeRealizedGainLossOnDisposalOfEquityMethodInvestment	-417585000	usd
	slg	Income Loss From Continuing Operations Before Realized Gain Loss On Disposal Of Equity Method Investment IncomeLossFromContinuingOperationsBeforeRealizedGainLossOnDisposalOfEquityMethodInvestment	-24464000	usd
CY2023Q2	us-gaap	Assets Assets	10041288000	usd
CY2022Q4	us-gaap	Assets Assets	12355794000	usd
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2023Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	23000000	usd
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	46300000	usd
CY2022Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	23500000	usd
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	48300000	usd
CY2023Q2	us-gaap	Other Liabilities OtherLiabilities	330799000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	236211000	usd
CY2023Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q2	us-gaap	Redeemable Noncontrolling Interest Equity Common Carrying Amount RedeemableNoncontrollingInterestEquityCommonCarryingAmount	254434000	usd
CY2022Q4	us-gaap	Redeemable Noncontrolling Interest Equity Common Carrying Amount RedeemableNoncontrollingInterestEquityCommonCarryingAmount	269993000	usd
CY2023Q2	us-gaap	Redeemable Noncontrolling Interest Equity Preferred Carrying Amount RedeemableNoncontrollingInterestEquityPreferredCarryingAmount	166501000	usd
CY2022Q4	us-gaap	Redeemable Noncontrolling Interest Equity Preferred Carrying Amount RedeemableNoncontrollingInterestEquityPreferredCarryingAmount	177943000	usd
CY2023Q2	us-gaap	Preferred Stock Value PreferredStockValue	221932000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12355794000	usd
CY2022Q2	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	155232000	usd
	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	82140000	usd
CY2023Q2	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	39885000	usd
CY2022Q2	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	30819000	usd
	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	81268000	usd
	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	61566000	usd
CY2023Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	6655000	usd
CY2022Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	6477000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	12956000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	13041000	usd
CY2022Q2	us-gaap	Interest Expense Other InterestExpenseOther	14960000	usd
	us-gaap	Interest Expense Other InterestExpenseOther	82274000	usd
	us-gaap	Interest Expense Other InterestExpenseOther	30030000	usd
CY2023Q2	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2154000	usd
CY2022Q2	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1917000	usd
	slg	Total Costs And Expenses Including Nonoperating Income Expense TotalCostsAndExpensesIncludingNonoperatingIncomeExpense	332866000	usd
CY2023Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-21932000	usd
CY2022Q2	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-131000	usd
	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-79000	usd
CY2023Q2	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-26678000	usd
CY2022Q2	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-64378000	usd
	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-28329000	usd
	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-65380000	usd
CY2023Q2	slg	Depreciable Real Estate Reserves Effecton Earnings DepreciableRealEstateReservesEffectonEarnings	-305916000	usd
CY2022Q2	slg	Depreciable Real Estate Reserves Effecton Earnings DepreciableRealEstateReservesEffectonEarnings	0	usd
	slg	Depreciable Real Estate Reserves Effecton Earnings DepreciableRealEstateReservesEffectonEarnings	-305916000	usd
	slg	Depreciable Real Estate Reserves Effecton Earnings DepreciableRealEstateReservesEffectonEarnings	0	usd
CY2023Q2	us-gaap	Profit Loss ProfitLoss	-379228000	usd
CY2022Q2	us-gaap	Profit Loss ProfitLoss	-37949000	usd
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7475000	usd
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7475000	usd
	us-gaap	Profit Loss ProfitLoss	-24464000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	17323000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-2247000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	16869000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8819000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	58643000	usd
CY2023Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-338382000	usd
CY2023Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-22771000	usd
CY2022Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2190000	usd
CY2023Q2	us-gaap	Interest Expense Other InterestExpenseOther	40621000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	40846000	usd

Files In Submission

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$SLG
SL GREEN REALTY CORP Stock $slg

2023 Q3 Form 10-Q Financial Statement

#000104097123000031 Filed on August 03, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SLG SL GREEN REALTY CORP Stock $slg

2023 Q3 Form 10-Q Financial Statement

#000104097123000031 Filed on August 03, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SLG
SL GREEN REALTY CORP Stock $slg