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Summary of Significant Accounting Policies - Customer Relationships and Acquisition Costs and Other Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Amortizable intangible assets |  |  |
Amortization | $ 248,611 | $ 215,350 | $ 204,507
Included in Depreciation and Amortization |  |  |
Estimated amortization expense for existing intangible assets for the next five succeeding fiscal years |  |  |
2023 | 181,866 |  |
2024 | 177,512 |  |
2025 | 175,963 |  |
2026 | 146,812 |  |
2027 | 124,434 |  |
Thereafter | 648,895 |  |
Customer and supplier relationship intangible assets |  |  |
Amortizable intangible assets |  |  |
GROSS CARRYING AMOUNT | 2,162,154 | 1,835,949 |
ACCUMULATED AMORTIZATION | (823,392) | (763,943) |
NET CARRYING AMOUNT | 1,338,762 | 1,072,006 |
Amortization | $ 156,779 | 117,761 | 117,514
Customer and supplier relationship intangible assets | Minimum |  |  |
Amortizable intangible assets |  |  |
Useful life of finite-lived intangible assets | 10 years |  |
Customer and supplier relationship intangible assets | Maximum |  |  |
Amortizable intangible assets |  |  |
Useful life of finite-lived intangible assets | 30 years |  |
Customer Inducements |  |  |
Amortizable intangible assets |  |  |
GROSS CARRYING AMOUNT | $ 47,794 | 51,403 |
ACCUMULATED AMORTIZATION | (26,158) | (28,400) |
NET CARRYING AMOUNT | $ 21,636 | 23,003 |
Customer Inducements, Current Record Management Vendor Or Payments To Customers | Minimum |  |  |
Amortizable intangible assets |  |  |
Useful life of finite-lived intangible assets | 1 year |  |
Customer Inducements, Current Record Management Vendor Or Payments To Customers | Maximum |  |  |
Amortizable intangible assets |  |  |
Useful life of finite-lived intangible assets | 10 years |  |
Data center in-place leases and tenant relationships |  |  |
Amortizable intangible assets |  |  |
Amortization | $ 16,955 | 42,333 | 42,637
Data center lease-based intangible assets |  |  |
Amortizable intangible assets |  |  |
GROSS CARRYING AMOUNT | 272,649 | 278,904 |
ACCUMULATED AMORTIZATION | (209,902) | (192,870) |
NET CARRYING AMOUNT | 62,747 | 86,034 |
GROSS CARRYING AMOUNT | 12,831 | 12,782 |
ACCUMULATED AMORTIZATION | (7,806) | (6,923) |
NET CARRYING AMOUNT | 5,025 | 5,859 |
Third-party commissions asset and other finite-lived intangible assets |  |  |
Amortizable intangible assets |  |  |
GROSS CARRYING AMOUNT | 83,297 | 33,947 |
ACCUMULATED AMORTIZATION | (28,581) | (13,716) |
NET CARRYING AMOUNT | 54,716 | 20,231 |
Amortization | 16,148 | 6,987 | 7,004
Customer inducements and data center above-market and below-market leases |  |  |
Amortizable intangible assets |  |  |
Amortization | 8,119 | $ 8,852 | $ 9,878
Customer inducements and data center above-market and below-market leases | Amortization Expense Charged To Revenues |  |  |
Estimated amortization expense for existing intangible assets for the next five succeeding fiscal years |  |  |
2023 | 6,198 |  |
2024 | 3,997 |  |
2025 | 2,504 |  |
2026 | 1,909 |  |
2027 | 1,299 |  |
Thereafter | $ 1,447 |  |

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