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Stock-Based Compensation Plans and Employee Benefits (Performance Incentive Plans) (Details) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 USD ($) plan item $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting rights percentage | 15.00% |  |
Number of iPIP plans | plan | 5 |  |
Investment period of iPIP plans | 2 years |  |
Equity-based compensation | $ (27,664) | $ 69,261 | $ 39,354
Performance Incentive Plan |  |  |
Accrued expenses | $ 70,445 | 151,810 |
iPIP Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 6 years |  |
Vesting rights percentage | 40.00% |  |
Performance Incentive Plan |  |  |
Accrued expenses | $ 45,800 | 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 | $ 4,600 | $ 3,800 | 3,400
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 |  |
Points at end of period (in shares) | 95.20 | 95.20 |
Aggregate gross book value of investments | $ 764,000 |  |
2021-2022 Performance Incentive Plans |  |  |
Performance Incentive Plan |  |  |
Points at beginning of period (in shares) | 84.75 |  |
Granted (in shares) | 7.95 |  |
Forfeited (in shares) | (0.95) |  |
Points at end of period (in shares) | 91.75 | 84.75 |
Aggregate gross book value of investments | $ 406,000 |  |
2013-2018 Performance Incentive Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Equity-based compensation | $ (38,300) | $ 58,200 | 30,700
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 |  |
Granted (in shares) | 0 |  |
Points at end of period (in shares) | 80.17 | 80.17 |
Aggregate gross book value of investments | $ 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 |  |
Granted (in shares) | 0 |  |
Points at end of period (in shares) | 70.40 | 70.40 |
iPIP distributions to plan participants | $ 19,200 | $ 10,700 | $ 1,500
iPIP distributions, equity component (in shares) | shares | 402,731 | 243,044 | 54,245
iPIP distributions, equity component, fair value (in dollars per share) | $ / shares | $ 16.06 | $ 22.66 | $ 14.51
iPIP distributions, shares issued net of tax withholdings (in shares) | shares | 193,416 | 131,757 | 32,825
2017-2018 Performance Incentive Plan |  |  |
Performance Incentive Plan |  |  |
Points at beginning of period (in shares) | 75.34 |  |
Granted (in shares) | 0 |  |
Points at end of period (in shares) | 75.34 | 75.34 |
Aggregate gross book value of investments | $ 159,000 |  |
Safehold Inc. |  |  |
Performance Incentive Plan |  |  |
Number of shares owned (in shares) | shares | 33,900,000 |  |
Safehold Inc. | 2019-2020 Performance Incentive Plans |  |  |
Performance Incentive Plan |  |  |
Number of shares owned (in shares) | shares | 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 |  |
Safehold Inc. | Common Stock | 2017-2018 Performance Incentive Plan |  |  |
Performance Incentive Plan |  |  |
Number of shares owned (in shares) | shares | 7,600,000 |  |

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