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Stock-Based Compensation Plans and Employee Benefits (Performance Incentive Plans) (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 USD ($) shares | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) plan item $ / shares shares | Jun. 30, 2021 USD ($) $ / shares shares | Dec. 31, 2021 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting rights percentage |  |  | 15.00% |  |
Equity-based compensation | $ (17,923) | $ 14,791 | $ (30,350) | $ 20,299 |
Performance Incentive Plan |  |  |  |  |
Accrued expenses | 65,760 |  | $ 65,760 |  | $ 151,810
iPIP Plans |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period |  |  | 6 years |  |
Vesting rights percentage |  |  | 40.00% |  |
Number of iPIP plans | plan |  |  | 5 |  |
Investment period of iPIP plans |  |  | 2 years |  |
Performance Incentive Plan |  |  |  |  |
Accrued expenses | $ 47,000 |  | $ 47,000 |  | $ 116,600
2019-2022 Performance Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of ownership classes of consolidated subsidiary | item |  |  | 2 |  |
Ownership percentage of class A units (as a percent) |  |  | 100.00% |  |
Equity-based compensation |  |  | $ 2,400 | 1,500 |
Settlement or distribution on units and awards, cash (as a percent) |  |  | 50.00% |  |
Settlement or distribution on units and awards, common stock (as a percent) |  |  | 50.00% |  |
2019-2020 Performance Incentive Plans |  |  |  |  |
Performance Incentive Plan |  |  |  |  |
Points at beginning of period (in shares) | 95.20 |  | 95.20 |  |
Granted (in shares) |  |  | 0 |  |
Forfeited (in shares) |  |  | 0 |  |
Points at end of period (in shares) |  |  | 95.20 |  |
Aggregate gross book value of investments | $ 764,000,000 |  | $ 764,000,000 |  |
2021-2022 Performance Incentive Plans |  |  |  |  |
Performance Incentive Plan |  |  |  |  |
Points at beginning of period (in shares) | 92.35 |  | 92.35 |  |
Granted (in shares) |  |  | 7.95 |  |
Forfeited (in shares) |  |  | (0.35) |  |
Points at end of period (in shares) |  |  | 84.75 |  |
Aggregate gross book value of investments | $ 435,000 |  | $ 435,000 |  |
2013-2018 Performance Incentive Plans |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Equity-based compensation |  |  | $ (37,100) | 15,100 |
Settlement or distribution on units and awards, cash (as a percent) |  |  | 50.00% |  |
Settlement or distribution on units and awards, common stock (as a percent) |  |  | 50.00% |  |
2013-2014 Performance Incentive Plan |  |  |  |  |
Performance Incentive Plan |  |  |  |  |
Points at beginning of period (in shares) | 80.17 |  | 80.17 |  |
Granted (in shares) |  |  | 0 |  |
Points at end of period (in shares) |  |  | 80.17 |  |
Aggregate gross book value of investments | $ 13,000 |  | $ 13,000 |  |
iPIP distributions to plan participants |  |  | $ 19,600 |  |
iPIP distributions, equity component (in shares) | shares |  |  | 412,041 |  |
iPIP distributions, equity component, fair value (in dollars per share) | $ / shares |  |  | $ 16.06 |  |
iPIP distributions, shares issued net of tax withholdings (in shares) | shares |  |  | 215,657 |  |
2015-2016 Performance Incentive Plan |  |  |  |  |
Performance Incentive Plan |  |  |  |  |
Points at beginning of period (in shares) | 70.40 |  | 70.40 |  |
Granted (in shares) |  |  | 0 |  |
Points at end of period (in shares) |  |  | 70.40 |  |
Aggregate gross book value of investments | $ 0 |  | $ 0 |  |
iPIP distributions to plan participants |  |  | $ 19,200 | $ 3,200 |
iPIP distributions, equity component (in shares) | shares |  |  | 402,731 | 97,881 |
iPIP distributions, equity component, fair value (in dollars per share) | $ / shares |  |  | $ 16.06 | $ 17.65 |
iPIP distributions, shares issued net of tax withholdings (in shares) | shares |  |  | 193,416 | 57,920 |
2017-2018 Performance Incentive Plan |  |  |  |  |
Performance Incentive Plan |  |  |  |  |
Points at beginning of period (in shares) | 75.34 |  | 75.34 |  |
Granted (in shares) |  |  | 0 |  |
Points at end of period (in shares) |  |  | 75.34 |  |
Aggregate gross book value of investments | $ 238,000 |  | $ 238,000 |  |
Safehold Inc. |  |  |  |  |
Performance Incentive Plan |  |  |  |  |
Number of shares owned (in shares) | shares | 40,100,000 |  | 40,100,000 |  |
Safehold Inc. | Common Stock | 2019-2020 Performance Incentive Plans |  |  |  |  |
Performance Incentive Plan |  |  |  |  |
Number of shares owned (in shares) | shares | 26,700,000 |  | 26,700,000 |  |
Safehold Inc. | Common Stock | 2021-2022 Performance Incentive Plans |  |  |  |  |
Performance Incentive Plan |  |  |  |  |
Number of shares owned (in shares) | shares | 5,000,000.0 |  | 5,000,000.0 |  |
Safehold Inc. | Common Stock | 2017-2018 Performance Incentive Plan |  |  |  |  |
Performance Incentive Plan |  |  |  |  |
Number of shares owned (in shares) | shares | 7,600,000 |  | 7,600,000 |  |

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