Qualifying And Valuation Accounts (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Allowance for doubtful accounts | |||
| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance at beginning of period | $ 122 | $ 125 | $ 112 |
| Additions Acquisition | 0 | 13 | 0 |
| Additions Charged to costs and expenses | 7 | (2) | 11 |
| (Credited) charged to other accounts | (8) | (9) | 6 |
| Deductions | (7) | (5) | (4) |
| Balance at end of period | 114 | 122 | 125 |
| Deferred tax asset valuation allowance | |||
| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance at beginning of period | 401 | 454 | 420 |
| Additions Acquisition | 0 | 38 | 0 |
| Additions Charged to costs and expenses | 315 | 37 | 77 |
| (Credited) charged to other accounts | (11) | (30) | 26 |
| Deductions | (1) | (98) | (69) |
| Balance at end of period | $ 704 | $ 401 | $ 454 |