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U.K. Sale - Additional Information (Detail) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jan. 19, 2021 | Mar. 31, 2021 | Jun. 30, 2021
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |
Gross proceeds from sale of business |  |  | $ 1,511,020
Discontinued Operations [Member] | U.K. Sales [Member] |  |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |
Gross proceeds from sale of business | $ 1,525,000 |  |
Settlement of existing foreign currency hedging liabilities | 85,000 |  |
Net proceeds from sale of business | $ 1,425,000 |  |
Cash from the balance sheet to reduce debt, amount |  | $ 1,640,000 |

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