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Debt - Debt (Parenthetical) (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Senior Notes, Interest at 3.60% Payable Semiannually, Principal Due on December 1, 2029 [Member] |  |
Debt Instrument [Line Items] |  |
Senior note face amount | $ 500,000,000 | $ 500,000,000
Senior notes interest rate | 3.60% | 3.60%
Senior note due date | Dec. 01, 2029 | Dec. 01, 2029
Senior Notes, Interest at 3.95% Payable Semiannually, Principal Due on December 1, 2042 [Member] |  |
Debt Instrument [Line Items] |  |
Senior note face amount | $ 1,100,000,000 | $ 1,100,000,000
Senior notes interest rate | 3.95% | 3.95%
Senior note due date | Dec. 01, 2042 | Dec. 01, 2042

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