XML 132 R112.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Partners' Capital of the Operating Partnership - EPS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Numerator |  |  |
Less: distributed earnings allocated to participating securities | $ (2,655) | $ (2,219) | $ (2,398)
Less: undistributed earnings allocated to participating securities | 0 | 0 | (192)
Net (loss) income attributable to SL Green common stockholders (numerator for basic earnings per share) | (582,164) | (95,243) | 432,214
Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares | $ 0 | $ 0 | $ 2,039
Denominator |  |  |
Diluted weighted average common stock outstanding (in shares) | 67,972,000 | 67,929,000 | 70,769,000
Common stock shares excluded from the diluted shares outstanding (in shares) | 1,273,417 | 1,682,236 | 948,017
SL Green Operating Partnership |  |  |
Numerator |  |  |
Net (loss) income attributable to SLGOP common unitholders | $ (616,974) | $ (98,818) | $ 460,261
Less: distributed earnings allocated to participating securities | (2,655) | (2,219) | (2,398)
Less: undistributed earnings allocated to participating securities | 0 | 0 | (192)
Net (loss) income attributable to SL Green common stockholders (numerator for basic earnings per share) | (619,629) | (101,037) | 457,671
Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares | 0 | 0 | 2,590
(Loss) income attributable to SLGOP common unitholders | $ (619,629) | $ (101,037) | $ 460,261
Denominator |  |  |
Basic weighted average common units outstanding (in shares) | 67,972,000 | 67,929,000 | 69,667,000
Stock-based compensation plans (in shares) | 0 | 0 | 765,000
Contingently issuable units (in shares) | 0 | 0 | 337,000
Diluted weighted average common stock outstanding (in shares) | 67,972,000 | 67,929,000 | 70,769,000

X
- Definition Incremental Common Units Attributable to Dilutive Effect of Nonvested Shares with Forfeitable Dividends + References No definition available. + Details
Name: | slg_IncrementalCommonUnitsAttributableToDilutiveEffectOfNonvestedSharesWithForfeitableDividends
Namespace Prefix: | slg_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Incremental Common Units Attributable to Share based Payment Arrangements + References No definition available. + Details
Name: | slg_IncrementalCommonUnitsAttributabletoSharebasedPaymentArrangements
Namespace Prefix: | slg_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents amounts attributable to ROP common unitholders. + References No definition available. + Details
Name: | slg_NetIncomeLossAllocatedToCommonUnitholders
Namespace Prefix: | slg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net Income (Loss) Allocated to, Common Unitholders, Including Antidilutive Effect + References No definition available. + Details
Name: | slg_NetIncomeLossAllocatedtoCommonUnitholdersIncludingAntidilutiveEffect
Namespace Prefix: | slg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net Income (Loss) Available To Common Stockholders, After Distributed And Undistributed Earnings Allocation, Basic + References No definition available. + Details
Name: | slg_NetIncomeLossAvailableToCommonStockholdersAfterDistributedAndUndistributedEarningsAllocationBasic
Namespace Prefix: | slg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Weighted Average Limited Partnership Units Outstanding, Basic, Including Adjustments + References No definition available. + Details
Name: | slg_WeightedAverageLimitedPartnershipUnitsOutstandingBasicIncludingAdjustments
Namespace Prefix: | slg_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of dividends declared in the period for each class of stock and the contractual amount of dividends (or interest on participating income bonds) that must be paid for the period (for example, unpaid cumulative dividends). Dividends declared in the current period do not include dividends declared in respect of prior-period unpaid cumulative dividends. Preferred dividends that are cumulative only if earned are deducted only to the extent that they are earned. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-60B + Details
Name: | us-gaap_DistributedEarnings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetIncomeLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of undistributed earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 65 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-65 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 66 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-66 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-60B + Details
Name: | us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of undistributed earnings (loss) allocated to participating securities for the diluted earnings (loss) per share or per unit calculation under the two-class method. + References Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-60 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 65 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-65 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 66 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-66 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-60B + Details
Name: | us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 16 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-16 + Details
Name: | us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |