$SLG
SL GREEN REALTY CORP Stock $slg

$slg Overview Financials Valuation SEC Filings Company Website

2023 Q2 Form 10-Q Financial Statement

#000104097123000020 Filed on May 05, 2023

Income Statement

Concept	2023 Q2	2023 Q1
Revenue	$221.1M	$223.6M
YoY Change	9.74%	18.95%
Cost Of Revenue	$93.50M	$99.75M
YoY Change	21.66%	24.85%
Gross Profit	$127.6M	$123.8M
YoY Change	2.39%	14.58%
Gross Profit Margin	57.71%	55.38%
Selling, General & Admin	$23.01M	$23.30M
YoY Change	-2.1%	-6.05%
% of Gross Profit	18.03%	18.82%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$71.24M	$80.57M
YoY Change	45.89%	64.66%
% of Gross Profit	55.84%	65.07%
Operating Expenses	$92.09M	$23.30M
YoY Change	291.88%	-6.05%
Operating Profit	$35.48M	$100.5M
YoY Change	-64.9%	20.72%
Interest Expense	-$82.12M	$64.84M
YoY Change	-352.19%	102.31%
% of Operating Profit	-231.43%	64.5%
Other Income/Expense, Net	-$305.9M
YoY Change
Pretax Income	-$379.2M	-$38.36M
YoY Change	899.31%	-384.44%
Income Tax	$2.000M	$800.0K
% Of Pretax Income
Net Earnings	-$360.6M	-$35.99M
YoY Change	798.38%	-413.28%
Net Earnings / Revenue	-163.12%	-16.1%
Basic Earnings Per Share	-$5.63	-$0.63
Diluted Earnings Per Share	-$5.63	-$0.63
COMMON SHARES
Basic Shares Outstanding	64.38M shares	64.37M shares
Diluted Shares Outstanding	68.34M shares	68.18M shares

Balance Sheet

Concept	2023 Q2	2023 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$192.0M	$169.2M
YoY Change	-10.96%	-34.05%
Cash & Equivalents	$192.0M	$158.9M
Short-Term Investments	$9.797M	$10.27M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$326.2M	$329.7M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$518.2M	$488.6M
YoY Change	2.1%	-18.08%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.967B	$7.143B
YoY Change	-9.34%	23.97%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$3.875B	$3.165B
YoY Change	26.05%	5.46%
Other Assets	$231.4M	$315.9M
YoY Change	12.05%	53.41%
Total Long-Term Assets	$9.523B	$11.85B
YoY Change	-6.61%	13.77%
TOTAL ASSETS
Total Short-Term Assets	$518.2M	$488.6M
Total Long-Term Assets	$9.523B	$11.85B
Total Assets	$10.04B	$12.34B
YoY Change	-6.2%	12.05%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$116.7M	$150.9M
YoY Change	-19.65%	8.18%
Accrued Expenses	$906.0M	$909.0M
YoY Change	4.81%	4.04%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.094B	$1.132B
YoY Change	0.5%	3.78%
LONG-TERM LIABILITIES
Long-Term Debt	$3.910B	$5.682B
YoY Change	-1.89%	35.87%
Other Long-Term Liabilities	$456.4M	$547.8M
YoY Change	23.63%	21.49%
Total Long-Term Liabilities	$4.366B	$6.230B
YoY Change	0.27%	34.47%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.094B	$1.132B
Total Long-Term Liabilities	$4.366B	$6.230B
Total Liabilities	$5.782B	$7.362B
YoY Change	6.22%	28.62%
SHAREHOLDERS EQUITY
Retained Earnings	$135.5M	$549.0M
YoY Change	-82.63%	-35.15%
Common Stock	$656.0K	$656.0K
YoY Change	0.15%	0.46%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.259B	$4.460B
YoY Change
Total Liabilities & Shareholders Equity	$10.04B	$12.34B
YoY Change	-6.2%	12.05%

Cashflow Statement

Concept	2023 Q2	2023 Q1
OPERATING ACTIVITIES
Net Income	-$360.6M	-$35.99M
YoY Change	798.38%	-413.28%
Depreciation, Depletion And Amortization	$71.24M	$80.57M
YoY Change	45.89%	64.66%
Cash From Operating Activities	$61.64M	$42.35M
YoY Change	-38.99%	-47.98%
INVESTING ACTIVITIES
Capital Expenditures	$72.27M	$61.92M
YoY Change	-210.72%	-200.39%
Acquisitions
YoY Change
Other Investing Activities	$99.77M	-$4.451M
YoY Change	-46.68%	-105.92%
Cash From Investing Activities	$27.50M	-$66.37M
YoY Change	-77.43%	-591.77%
FINANCING ACTIVITIES
Cash Dividend Paid		$57.37M
YoY Change		-13.52%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-135.3M	-$2.772M
YoY Change	-46.53%	-97.77%
NET CHANGE
Cash From Operating Activities	61.64M	$42.35M
Cash From Investing Activities	27.50M	-$66.37M
Cash From Financing Activities	-135.3M	-$2.772M
Net Change In Cash	-46.20M	-$26.79M
YoY Change	52.7%	-9.69%
FREE CASH FLOW
Cash From Operating Activities	$61.64M	$42.35M
Capital Expenditures	$72.27M	$61.92M
Free Cash Flow	-$10.63M	-$19.57M
YoY Change	-106.39%	-113.68%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q1	dei	Entity Central Index Key EntityCentralIndexKey	0001040971
CY2023Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2023Q1	dei	Amendment Flag AmendmentFlag	false
CY2023Q1	dei	Document Type DocumentType	10-Q
CY2023Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2023Q1	dei	Document Period End Date DocumentPeriodEndDate	2023-03-31
CY2023Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2023Q1	dei	Entity File Number EntityFileNumber	1-13199
CY2023Q1	dei	Entity Registrant Name EntityRegistrantName	SL GREEN REALTY CORP
CY2023Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2023Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-3956775
CY2023Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	One Vanderbilt Avenue
CY2023Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	New York
CY2023Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
CY2023Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	10017
CY2023Q1	dei	City Area Code CityAreaCode	212
CY2023Q1	dei	Local Phone Number LocalPhoneNumber	594-2700
CY2023Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2023Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023Q1	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	64375527	shares
CY2023Q1	us-gaap	Land Land	1576927000	usd
CY2022Q4	us-gaap	Land Land	1576927000	usd
CY2023Q1	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	4940138000	usd
CY2022Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	4903776000	usd
CY2023Q1	slg	Building Leasehold Improvements Gross BuildingLeaseholdImprovementsGross	1700376000	usd
CY2022Q4	slg	Building Leasehold Improvements Gross BuildingLeaseholdImprovementsGross	1691831000	usd
CY2023Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1026265000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1026265000	usd
CY2023Q1	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	9243706000	usd
CY2022Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	9198799000	usd
CY2023Q1	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	2100804000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	2039554000	usd
CY2023Q1	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	7142902000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	7159245000	usd
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CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	203273000	usd
CY2023Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	198325000	usd
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CY2023Q1	us-gaap	Marketable Securities MarketableSecurities	10273000	usd
CY2022Q4	us-gaap	Marketable Securities MarketableSecurities	11240000	usd
CY2023Q1	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	36289000	usd
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CY2023Q1	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	266567000	usd
CY2022Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	257887000	usd
CY2023Q1	slg	Discount Of Structured Finance Investments DiscountOfStructuredFinanceInvestments	1689000	usd
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CY2023Q1	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
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CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-35993000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	11489000	usd
CY2023Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3738000	usd
CY2022Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3738000	usd
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-39731000	usd
CY2022Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	7751000	usd
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.63
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.63
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.11
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64079000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64349000	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	68182000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	70228000	shares
CY2023Q1	us-gaap	Profit Loss ProfitLoss	-38357000	usd
CY2022Q1	us-gaap	Profit Loss ProfitLoss	13485000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-31059000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	43567000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-968000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-1793000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-32027000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	41774000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-70384000	usd
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	55259000	usd
CY2023Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-2364000	usd
CY2022Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1996000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-1851000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	2277000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-66169000	usd
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	50986000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4646922000	usd
CY2023Q1	slg	Profit Loss Less Minority Interest In Net Income Loss Operating Partnerships ProfitLossLessMinorityInterestInNetIncomeLossOperatingPartnerships	-37618000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-30176000	usd
CY2023Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3738000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	184000	usd
CY2023Q1	slg	Reallocationof Noncontrolling Interest In Operating Partnership Increase Decrease ReallocationofNoncontrollingInterestInOperatingPartnershipIncreaseDecrease	-10147000	usd
CY2023Q1	slg	Deferred Compensation Plan And Stock Award Net DeferredCompensationPlanAndStockAwardNet	7559000	usd
CY2023Q1	slg	Consolidation Of Joint Venture Interest ConsolidationOfJointVentureInterest	8560000	usd
CY2023Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	136000	usd
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.812
CY2023Q1	us-gaap	Dividends Common Stock DividendsCommonStock	52236000	usd
CY2023Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4529174000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4778253000	usd
CY2022Q1	slg	Profit Loss Less Minority Interest In Net Income Loss Operating Partnerships ProfitLossLessMinorityInterestInNetIncomeLossOperatingPartnerships	11346000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	39497000	usd
CY2022Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3738000	usd
CY2022Q1	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	89000	usd
CY2022Q1	slg	Reallocationof Noncontrolling Interest In Operating Partnership Increase Decrease ReallocationofNoncontrollingInterestInOperatingPartnershipIncreaseDecrease	-43023000	usd
CY2022Q1	slg	Deferred Compensation Plan And Stock Award Net DeferredCompensationPlanAndStockAwardNet	5056000	usd
CY2022Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	151197000	usd
CY2022Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	123000	usd
CY2022Q1	us-gaap	Stock Issued During Period Value Stock Dividend StockIssuedDuringPeriodValueStockDividend	160620000	usd
CY2022Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.932
CY2022Q1	us-gaap	Dividends Common Stock DividendsCommonStock	57665000	usd
CY2022Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4739115000	usd
CY2023Q1	us-gaap	Profit Loss ProfitLoss	-38357000	usd
CY2022Q1	us-gaap	Profit Loss ProfitLoss	13485000	usd
CY2023Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	80569000	usd
CY2022Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	48931000	usd
CY2023Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-7412000	usd
CY2022Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-4715000	usd
CY2023Q1	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	258000	usd
CY2022Q1	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	188000	usd
CY2023Q1	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-79000	usd
CY2022Q1	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	usd
CY2023Q1	slg	Purchase Price Fair Value Adjustment Gain Loss PurchasePriceFairValueAdjustmentGainLoss	239000	usd
CY2022Q1	slg	Purchase Price Fair Value Adjustment Gain Loss PurchasePriceFairValueAdjustmentGainLoss	-63000	usd
CY2023Q1	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-1651000	usd
CY2022Q1	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-1002000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	6890000	usd
CY2022Q1	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	0	usd
CY2023Q1	us-gaap	Straight Line Rent StraightLineRent	7431000	usd
CY2022Q1	us-gaap	Straight Line Rent StraightLineRent	546000	usd
CY2023Q1	slg	Non Cash Lease Expense NonCashLeaseExpense	5261000	usd
CY2022Q1	slg	Non Cash Lease Expense NonCashLeaseExpense	6043000	usd
CY2023Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	3271000	usd
CY2022Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	6964000	usd
CY2023Q1	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	969000	usd
CY2022Q1	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-13673000	usd
CY2023Q1	us-gaap	Increase Decrease In Due From Related Parties Current IncreaseDecreaseInDueFromRelatedPartiesCurrent	-577000	usd
CY2022Q1	us-gaap	Increase Decrease In Due From Related Parties Current IncreaseDecreaseInDueFromRelatedPartiesCurrent	2335000	usd
CY2023Q1	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	3911000	usd
CY2022Q1	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	4240000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11160000	usd
CY2022Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	25076000	usd
CY2023Q1	slg	Increase Decrease In Accrued Liabilities And Other IncreaseDecreaseInAccruedLiabilitiesAndOther	4656000	usd
CY2022Q1	slg	Increase Decrease In Accrued Liabilities And Other IncreaseDecreaseInAccruedLiabilitiesAndOther	28049000	usd
CY2023Q1	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	2450000	usd
CY2022Q1	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	3550000	usd
CY2023Q1	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-2116000	usd
CY2022Q1	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	864000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	42349000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	81402000	usd
CY2023Q1	slg	Payments To Acquire Land Buildings And Improvements PaymentsToAcquireLandBuildingsAndImprovements	61918000	usd
CY2022Q1	slg	Payments To Acquire Land Buildings And Improvements PaymentsToAcquireLandBuildingsAndImprovements	61680000	usd
CY2023Q1	slg	Payments For Proceeds From Acquisition Deposits And Deferred Purchase Price PaymentsForProceedsFromAcquisitionDepositsAndDeferredPurchasePrice	0	usd
CY2022Q1	slg	Payments For Proceeds From Acquisition Deposits And Deferred Purchase Price PaymentsForProceedsFromAcquisitionDepositsAndDeferredPurchasePrice	15000000	usd
CY2023Q1	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	22985000	usd
CY2022Q1	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	11399000	usd
CY2023Q1	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	41812000	usd
CY2022Q1	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	16089000	usd
CY2023Q1	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	0	usd
CY2022Q1	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	91994000	usd
CY2023Q1	slg	Payments For Proceeds From Other Investments PaymentsForProceedsFromOtherInvestments	17700000	usd
CY2022Q1	slg	Payments For Proceeds From Other Investments PaymentsForProceedsFromOtherInvestments	-209000	usd
CY2023Q1	slg	Origination Of Debt And Preferred Equity Investments OriginationOfDebtAndPreferredEquityInvestments	5578000	usd
CY2022Q1	slg	Origination Of Debt And Preferred Equity Investments OriginationOfDebtAndPreferredEquityInvestments	13122000	usd
CY2023Q1	slg	Repayments Or Redemption Of Debt And Preferred Equity Investments RepaymentsOrRedemptionOfDebtAndPreferredEquityInvestments	0	usd
CY2022Q1	slg	Repayments Or Redemption Of Debt And Preferred Equity Investments RepaymentsOrRedemptionOfDebtAndPreferredEquityInvestments	6405000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-66369000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	13496000	usd
CY2023Q1	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	usd
CY2022Q1	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	5309000	usd
CY2023Q1	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	1473000	usd
CY2022Q1	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	55715000	usd
CY2023Q1	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	143000000	usd
CY2022Q1	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	320000000	usd
CY2023Q1	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	78000000	usd
CY2022Q1	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	210000000	usd
CY2023Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	184000	usd
CY2022Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	89000	usd
CY2023Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2022Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	151197000	usd
CY2023Q1	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	usd
CY2022Q1	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	17967000	usd
CY2023Q1	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	5220000	usd
CY2022Q1	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	18272000	usd
CY2023Q1	slg	Distributions To Noncontrolling Interests Other Partnerships DistributionsToNoncontrollingInterestsOtherPartnerships	136000	usd
CY2022Q1	slg	Distributions To Noncontrolling Interests Other Partnerships DistributionsToNoncontrollingInterestsOtherPartnerships	123000	usd
CY2023Q1	slg	Proceeds From Noncontrolling Interests In Other Partnerships ProceedsFromNoncontrollingInterestsInOtherPartnerships	426000	usd
CY2022Q1	slg	Proceeds From Noncontrolling Interests In Other Partnerships ProceedsFromNoncontrollingInterestsInOtherPartnerships	0	usd
CY2023Q1	slg	Distribution To Noncontrolling Interest Operating Partnership DistributionToNoncontrollingInterestOperatingPartnership	3822000	usd
CY2022Q1	slg	Distribution To Noncontrolling Interest Operating Partnership DistributionToNoncontrollingInterestOperatingPartnership	4415000	usd
CY2023Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	57373000	usd
CY2022Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	66339000	usd
CY2023Q1	slg	Proceeds From Other Obligation Related To Secured Borrowing ProceedsFromOtherObligationRelatedToSecuredBorrowing	0	usd
CY2022Q1	slg	Proceeds From Other Obligation Related To Secured Borrowing ProceedsFromOtherObligationRelatedToSecuredBorrowing	77874000	usd
CY2023Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	usd
CY2022Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3888000	usd
CY2023Q1	slg	Proceeds From Payments Of Financing Costs ProceedsFromPaymentsOfFinancingCosts	358000	usd
CY2022Q1	slg	Proceeds From Payments Of Financing Costs ProceedsFromPaymentsOfFinancingCosts	-80000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2772000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-124564000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-26792000	usd
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-29666000	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
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	357262000	usd
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	307318000	usd
CY2023Q1	slg	Issuance Of Special Dividend Stock Dividend IssuanceOfSpecialDividendStockDividend	0	usd
CY2022Q1	slg	Issuance Of Special Dividend Stock Dividend IssuanceOfSpecialDividendStockDividend	160620000	usd
CY2023Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	0	usd
CY2022Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	8700000	usd
CY2023Q1	slg	Operating Partnership Noncontrolling Interest Fair Value Adjustment OperatingPartnershipNoncontrollingInterestFairValueAdjustment	10147000	usd
CY2022Q1	slg	Operating Partnership Noncontrolling Interest Fair Value Adjustment OperatingPartnershipNoncontrollingInterestFairValueAdjustment	43023000	usd
CY2023Q1	slg	Contribution To Consolidated Joint Venture Interest ContributionToConsolidatedJointVentureInterest	8134000	usd
CY2022Q1	slg	Contribution To Consolidated Joint Venture Interest ContributionToConsolidatedJointVentureInterest	0	usd
CY2023Q1	slg	Removalof Fully Depreciated Real Estate Assets RemovalofFullyDepreciatedRealEstateAssets	4247000	usd
CY2022Q1	slg	Removalof Fully Depreciated Real Estate Assets RemovalofFullyDepreciatedRealEstateAssets	651000	usd
CY2023Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	158937000	usd
CY2022Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	223674000	usd
CY2023Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	198325000	usd
CY2022Q1	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	83644000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	357262000	usd
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	307318000	usd
CY2023Q1	slg	Numberof Real Estate Buildings NumberofRealEstateBuildings	51	building
CY2023Q1	us-gaap	Area Of Real Estate Property AreaOfRealEstateProperty	29708910	sqft
CY2023Q1	slg	Mortgage Loanson Real Estate Commercialand Consumer Net Including Debt Investments Other MortgageLoansonRealEstateCommercialandConsumerNetIncludingDebtInvestmentsOther	626800000	usd
CY2023Q1	slg	Debt Investments Other DebtInvestmentsOther	8500000	usd
CY2023Q1	slg	Number Of Shares On Redemption Of One Unit Of Partnership Interest NumberOfSharesOnRedemptionOfOneUnitOfPartnershipInterest	1	shares
CY2023Q1	slg	Rental Revenue Increase Decrease Acquired Lease Amortization RentalRevenueIncreaseDecreaseAcquiredLeaseAmortization	-8200000	usd
CY2022Q1	slg	Rental Revenue Increase Decrease Acquired Lease Amortization RentalRevenueIncreaseDecreaseAcquiredLeaseAmortization	-100000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	403552000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	403552000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	203075000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	190066000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	200477000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	213486000	usd
CY2023Q1	slg	Finite Lived Intangible Liabilities Gross FiniteLivedIntangibleLiabilitiesGross	361338000	usd
CY2022Q4	slg	Finite Lived Intangible Liabilities Gross FiniteLivedIntangibleLiabilitiesGross	361338000	usd
CY2023Q1	slg	Finite Lived Intangible Liabilities Accumulated Amortization FiniteLivedIntangibleLiabilitiesAccumulatedAmortization	222036000	usd
CY2022Q4	slg	Finite Lived Intangible Liabilities Accumulated Amortization FiniteLivedIntangibleLiabilitiesAccumulatedAmortization	212191000	usd
CY2023Q1	slg	Finite Lived Intangible Liabilities Net FiniteLivedIntangibleLiabilitiesNet	139302000	usd
CY2022Q4	slg	Finite Lived Intangible Liabilities Net FiniteLivedIntangibleLiabilitiesNet	149147000	usd
CY2023Q1	us-gaap	Marketable Securities MarketableSecurities	10273000	usd
CY2022Q4	us-gaap	Marketable Securities MarketableSecurities	11240000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2022Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	0	usd
CY2023Q1	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	0	usd
CY2022Q1	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-100000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	800000	usd
CY2022Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	900000	usd
CY2023Q1	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>
CY2023Q1	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.
CY2023Q1	slg	Number Of Real Estate Properties Acquired From Third Party NumberOfRealEstatePropertiesAcquiredFromThirdParty	0	property
CY2023Q1	slg	Number Of Real Estate Properties Disposed NumberOfRealEstatePropertiesDisposed	0	property
CY2022Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	623280000	usd
CY2021Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	1088723000	usd
CY2023Q1	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
CY2023Q1	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
CY2023Q1	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	626803000	usd
CY2022Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	623280000	usd
CY2023Q1	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	626803000	usd
CY2023Q1	slg	Mortgage Loanson Real Estate Senior Financing MortgageLoansonRealEstateSeniorFinancing	1976821000	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
CY2023Q1	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
CY2023Q1	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
CY2023Q1	slg	Financing Receivable Nonaccrual No Allowance Number FinancingReceivableNonaccrualNoAllowanceNumber	2	loan
CY2022Q4	slg	Number Of Investments Nonperforming NumberOfInvestmentsNonperforming	2	investment
CY2023Q1	slg	Number Of Investments Nonperforming NumberOfInvestmentsNonperforming	2	investment
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	626803000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	623280000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	0	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	0	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	79865000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	546938000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	626803000	usd
CY2023Q1	slg	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	6900000	usd
CY2023Q1	slg	Financing Receivable Portfolio Segments Number FinancingReceivablePortfolioSegmentsNumber	1	segment
CY2022	slg	Financing Receivable Portfolio Segments Number FinancingReceivablePortfolioSegmentsNumber	1	segment
CY2023Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	5800000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	usd
CY2023Q1	srt	Mortgage Loans On Real Estate Interest Rate MortgageLoansOnRealEstateInterestRate	0.0574
CY2023Q1	slg	Variable Interest Entity Not Primary Beneficiary Investment VariableInterestEntityNotPrimaryBeneficiaryInvestment	79900000	usd
CY2022Q4	slg	Variable Interest Entity Not Primary Beneficiary Investment VariableInterestEntityNotPrimaryBeneficiaryInvestment	86200000	usd
CY2022Q4	us-gaap	Equity Method Investments EquityMethodInvestments	3190137000	usd
CY2023Q1	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	562900000	usd
CY2023Q1	us-gaap	Deferred Costs Leasing Gross DeferredCostsLeasingGross	406407000	usd
CY2022Q4	us-gaap	Deferred Costs Leasing Gross DeferredCostsLeasingGross	407188000	usd
CY2023Q1	slg	Accumulated Amortization Of Deferred Costs AccumulatedAmortizationOfDeferredCosts	288805000	usd
CY2022Q4	slg	Accumulated Amortization Of Deferred Costs AccumulatedAmortizationOfDeferredCosts	286031000	usd
CY2023Q1	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	117602000	usd
CY2022Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	121157000	usd
CY2023Q1	slg	Secured Debt Bearing Fixed Interest Amount SecuredDebtBearingFixedInterestAmount	3164341000	usd
CY2022Q4	slg	Secured Debt Bearing Fixed Interest Amount SecuredDebtBearingFixedInterestAmount	3165814000	usd
CY2023Q1	slg	Secured Debt Bearing Variable Interest Amount SecuredDebtBearingVariableInterestAmount	70148000	usd
CY2022Q4	slg	Secured Debt Bearing Variable Interest Amount SecuredDebtBearingVariableInterestAmount	70148000	usd
CY2023Q1	slg	Secured Debt Gross SecuredDebtGross	3234489000	usd
CY2022Q4	slg	Secured Debt Gross SecuredDebtGross	3235962000	usd
CY2023Q1	slg	Secured Debt Deferred Finance Costs Net SecuredDebtDeferredFinanceCostsNet	7708000	usd
CY2022Q4	slg	Secured Debt Deferred Finance Costs Net SecuredDebtDeferredFinanceCostsNet	8399000	usd
CY2023Q1	us-gaap	Secured Debt SecuredDebt	3226781000	usd
CY2022Q4	us-gaap	Secured Debt SecuredDebt	3227563000	usd
CY2023Q1	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	3800000000	usd
CY2022Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	3800000000	usd
CY2023Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	264502000	usd
CY2023Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	962237000	usd
CY2023Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	470000000	usd
CY2023Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	0	usd
CY2023Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	3752750000	usd
CY2023Q1	slg	Long Term Debt Maturity After Year Four LongTermDebtMaturityAfterYearFour	150000000	usd
CY2023Q1	slg	Long Term Debt Maturities Repayments Of Principal LongTermDebtMaturitiesRepaymentsOfPrincipal	5599489000	usd
CY2023Q1	us-gaap	Interest Expense InterestExpense	64843000	usd
CY2022Q1	us-gaap	Interest Expense InterestExpense	32052000	usd
CY2023Q1	slg	Finance Lease Interest Expense Before Capitalized Interest FinanceLeaseInterestExpenseBeforeCapitalizedInterest	1106000	usd
CY2022Q1	slg	Finance Lease Interest Expense Before Capitalized Interest FinanceLeaseInterestExpenseBeforeCapitalizedInterest	1237000	usd
CY2023Q1	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	25464000	usd
CY2022Q1	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	17941000	usd
CY2023Q1	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1487000	usd
CY2022Q1	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	usd
CY2023Q1	us-gaap	Interest Income Operating InterestIncomeOperating	319000	usd
CY2022Q1	us-gaap	Interest Income Operating InterestIncomeOperating	278000	usd
CY2023Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-41653000	usd
CY2022Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-15070000	usd
CY2023Q1	us-gaap	Due From Joint Ventures DueFromJointVentures	25976000	usd
CY2022Q4	us-gaap	Due From Joint Ventures DueFromJointVentures	26812000	usd
CY2023Q1	us-gaap	Due From Other Related Parties DueFromOtherRelatedParties	818000	usd
CY2022Q4	us-gaap	Due From Other Related Parties DueFromOtherRelatedParties	540000	usd
CY2023Q1	us-gaap	Due From Related Parties DueFromRelatedParties	26794000	usd
CY2022Q4	us-gaap	Due From Related Parties DueFromRelatedParties	27352000	usd
CY2023Q1	slg	Total Shares Authorized TotalSharesAuthorized	260000000	shares
CY2023Q1	slg	Total Par Or Stated Value Per Share TotalParOrStatedValuePerShare	0.01
CY2023Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	160000000	shares
CY2023Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q1	us-gaap	Excess Stock Shares Authorized ExcessStockSharesAuthorized	75000000	shares
CY2023Q1	slg	Excess Stock Par Or Stated Value Per Share ExcessStockParOrStatedValuePerShare	0.01
CY2023Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000	shares
CY2023Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2023Q1	us-gaap	Excess Stock Shares Outstanding ExcessStockSharesOutstanding	0	shares
CY2023Q1	us-gaap	Excess Stock Shares Issued ExcessStockSharesIssued	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
CY2023Q1	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-39731000	usd
CY2022Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	7751000	usd
CY2023Q1	us-gaap	Distributed Earnings DistributedEarnings	406000	usd
CY2022Q1	us-gaap	Distributed Earnings DistributedEarnings	335000	usd
CY2023Q1	slg	Net Income Loss Available To Common Stockholders After Distributed And Undistributed Earnings Allocation Basic NetIncomeLossAvailableToCommonStockholdersAfterDistributedAndUndistributedEarningsAllocationBasic	-40137000	usd
CY2022Q1	slg	Net Income Loss Available To Common Stockholders After Distributed And Undistributed Earnings Allocation Basic NetIncomeLossAvailableToCommonStockholdersAfterDistributedAndUndistributedEarningsAllocationBasic	7416000	usd
CY2023Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	usd
CY2022Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	96000	usd
CY2023Q1	us-gaap	Dilutive Securities Effect On Basic Earnings Per Share Other DilutiveSecuritiesEffectOnBasicEarningsPerShareOther	-2837000	usd
CY2022Q1	us-gaap	Dilutive Securities Effect On Basic Earnings Per Share Other DilutiveSecuritiesEffectOnBasicEarningsPerShareOther	492000	usd
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-42974000	usd
CY2022Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	7812000	usd
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64079000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64349000	shares
CY2023Q1	slg	Incremental Common Shares Attributable To Redemption Of Units To Common Shares IncrementalCommonSharesAttributableToRedemptionOfUnitsToCommonShares	4103000	shares
CY2022Q1	slg	Incremental Common Shares Attributable To Redemption Of Units To Common Shares IncrementalCommonSharesAttributableToRedemptionOfUnitsToCommonShares	4121000	shares
CY2023Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2022Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	984000	shares
CY2023Q1	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	shares
CY2022Q1	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	774000	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	68182000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	70228000	shares
CY2023Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1275225	shares
CY2022Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	351927	shares
CY2023Q1	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	400000	usd
CY2022Q1	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	300000	usd
CY2023Q1	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
CY2023Q1	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	10273000	usd
CY2023Q1	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	37082000	usd
CY2023Q1	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	15759000	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
CY2023Q1	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	16400000	usd
CY2023Q1	us-gaap	Assets Needed For Immediate Settlement Aggregate Fair Value AssetsNeededForImmediateSettlementAggregateFairValue	17100000	usd
CY2023Q1	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-38500000	usd
CY2023Q1	slg	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months Into Equity In Net Income CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsIntoEquityInNetIncome	-9700000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-19408000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	38686000	usd
CY2023Q1	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	-11651000	usd
CY2022Q1	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	4881000	usd
CY2022Q1	us-gaap	Revenues Revenues	187964000	usd
CY2023Q1	slg	Income Loss From Continuing Operations Before Realized Gain Loss On Disposal Of Equity Method Investment IncomeLossFromContinuingOperationsBeforeRealizedGainLossOnDisposalOfEquityMethodInvestment	-38357000	usd
CY2023Q1	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	166353000	usd
CY2022Q1	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	136581000	usd
CY2023Q1	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	20450000	usd
CY2022Q1	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	19555000	usd
CY2023Q1	slg	Operating Lease Lease Income Fixed And Variable Lease Payments OperatingLeaseLeaseIncomeFixedAndVariableLeasePayments	186803000	usd
CY2022Q1	slg	Operating Lease Lease Income Fixed And Variable Lease Payments OperatingLeaseLeaseIncomeFixedAndVariableLeasePayments	156136000	usd
CY2023Q1	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	8239000	usd
CY2022Q1	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-105000	usd
CY2023Q1	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	195042000	usd
CY2022Q1	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	156031000	usd
CY2023Q1	us-gaap	Sublease Income SubleaseIncome	48900000	usd
CY2022Q1	us-gaap	Sublease Income SubleaseIncome	56200000	usd
CY2023Q1	us-gaap	Sales Type Lease Interest Income SalesTypeLeaseInterestIncome	1106000	usd
CY2022Q1	us-gaap	Sales Type Lease Interest Income SalesTypeLeaseInterestIncome	1092000	usd
CY2023Q1	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2023Q1	us-gaap	Revenues Revenues	223575000	usd
CY2022Q1	slg	Income Loss From Continuing Operations Before Realized Gain Loss On Disposal Of Equity Method Investment IncomeLossFromContinuingOperationsBeforeRealizedGainLossOnDisposalOfEquityMethodInvestment	13485000	usd
CY2023Q1	us-gaap	Assets Assets	12342119000	usd
CY2022Q4	us-gaap	Assets Assets	12355794000	usd
CY2023Q1	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2023Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	23300000	usd
CY2022Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	24800000	usd

Files In Submission

Name	View Source	Status
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$SLG
SL GREEN REALTY CORP Stock $slg

2023 Q2 Form 10-Q Financial Statement

#000104097123000020 Filed on May 05, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SLG SL GREEN REALTY CORP Stock $slg

2023 Q2 Form 10-Q Financial Statement

#000104097123000020 Filed on May 05, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SLG
SL GREEN REALTY CORP Stock $slg