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Notes Payable, Other and Short-Term Borrowings - Carrying Amounts and Estimated Fair Values of Company's Senior Notes (Parenthetical) (Detail) | Dec. 31, 2020 | Aug. 14, 2020 | Jul. 10, 2020 | Dec. 31, 2019 | Sep. 27, 2019 | Jul. 24, 2018
--- | --- | --- | --- | --- | --- | ---
5.125% Senior Notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 5.125% | 5.125% |  | 5.125% |  |
5.375% Senior Notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 5.375% |  |  | 5.375% |  | 5.375%
4.375% Senior Notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 4.375% |  | 4.375% | 4.375% |  |
3.750% Senior Notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | 3.75% |  |  | 3.75% | 3.75% |

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