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Long-Term Debt - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2021 | Sep. 30, 2021 | Sep. 30, 2020
Debt Instrument [Line Items] |  |  |  |  |
Gain (loss) on extinguishment of debt | $ 0 | $ 0 | $ (12) | $ (12) | $ (295)
Asset Based Revolving Credit Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  | 4,500 |  |
Senior Secured Term Loan A-6 Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  | 1,071 |  |
Senior Secured Term Loan A-7 Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  | 1,500 |  |
Senior Secured Term Loan B-12 Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  | 1,455 |  |
Senior Secured Term Loan B-13 Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  | 1,131 |  |
Senior Secured Term Loan B-14 Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  | 500 |  |
Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, principal amount |  |  | 2,350 |  |
Senior Notes [Member] | Senior Secured Notes Due 2031 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, principal amount |  |  | $ 850 |  |
Debt instrument, stated interest |  |  | 2.375% |  |
Senior Notes [Member] | Senior Secured Notes Due 2051 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, principal amount |  |  | $ 1,500 |  |
Debt instrument, stated interest |  |  | 3.50% |  |

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