Schedule II—Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Customer Receivable Reserve | |||
| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance at Beginning of Year | $ 31 | $ 91 | $ 51 |
| Charged to Expenses | 49 | 27 | 108 |
| Charges Utilized/ Write-Offs | (41) | (87) | (68) |
| Balance at End of Year | 39 | 31 | 91 |
| Insurance Liability | |||
| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance at Beginning of Year | 47 | 51 | 73 |
| Charged to Expenses | 140 | 85 | 98 |
| Changes in Estimates for Prior Periods | (5) | 1 | (21) |
| Charges Utilized/ Write-Offs | (121) | (90) | (99) |
| Balance at End of Year | 61 | 47 | 51 |
| Valuation Allowance on Deferred Tax Assets | |||
| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance at Beginning of Year | 3,264 | 2,053 | 1,024 |
| Charged to Expenses | (98) | 1,211 | 1,029 |
| Charged to Other Accounts | 0 | 0 | 0 |
| Balance at End of Year | $ 3,166 | $ 3,264 | $ 2,053 |