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Long-term Corporate Debt and Borrowing Arrangements (Narrative) (Detail) - Senior Notes - USD ($) | 1 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Jun. 30, 2021
5.375% Senior Notes |  |
Debt Instrument [Line Items] |  |
Amount issued | $ 600,000,000 |
Debt instrument stated interest percentage | 5.375% | 5.375%
10.500% Senior Secured Notes |  |
Debt Instrument [Line Items] |  |
Debt instrument stated interest percentage | 10.50% | 10.50%
Repayments of debt | $ 599,000,000 |
4.750% Senior Notes |  |
Debt Instrument [Line Items] |  |
Amount issued | $ 500,000,000 |
Debt instrument stated interest percentage | 4.75% | 4.75%
6.375 % Senior Notes |  |
Debt Instrument [Line Items] |  |
Debt instrument stated interest percentage | 6.375% |
Repayments of debt | $ 356,000,000 |
5.250% Senior Notes |  |
Debt Instrument [Line Items] |  |
Debt instrument stated interest percentage | 5.25% | 5.25%
Repayments of debt | $ 142,000,000 |

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