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Summary of Significant Accounting Policies - Activity in Real Estate Facilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Operating facilities, at cost: |  |  |
Ending balance | $ 6,134,702 |  |
Accumulated depreciation: |  |  |
Depreciation expense | (284,600) | $ (198,800) | $ (153,900)
Ending balance | (1,693,074) |  |
Total property, buildings and equipment and finance leases, net | 5,229,629 | 4,895,506 |
Total real estate facilities |  |  |
Operating facilities, at cost: |  |  |
Beginning balance | 5,706,760 | 3,729,589 |
Capital expenditures | 304,886 | 346,027 |
Acquisitions | 383,600 | 1,662,650 |
Purchase price allocation adjustments | (198,541) | 0 |
Disposition | (3,691) | (62,225) |
Impairment | (1,700) | (2,153) |
Conversion of leased assets to owned | 0 | 7,956 |
Impact of foreign exchange rate changes | (56,612) | 24,916 |
Ending balance | 6,134,702 | 5,706,760 | 3,729,589
Accumulated depreciation: |  |  |
Beginning balance | (1,080,922) | (936,422) |
Depreciation expense | (201,497) | (146,237) |
Dispositions | 1,259 | 8,731 |
Impact of foreign exchange rate changes | 3,986 | (6,994) |
Ending balance | (1,277,174) | (1,080,922) | $ (936,422)
Total property, buildings and equipment and finance leases, net | 4,857,528 | 4,625,838 |
Non-real estate assets |  |  |
Accumulated depreciation: |  |  |
Ending balance | (689,450) |  |
Total property, buildings and equipment and finance leases, net | $ 372,101 | $ 269,668 |

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