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Long Term Retention Plan - Long Term Retention Program Accrued Compensation Expense (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Long term retention program | $ 84 | $ 89 | $ 130
LTRP 2015 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Long term retention program | 0 | 0 | 10
LTRP 2016 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Long term retention program | 0 | 2 | 23
LTRP 2017 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Long term retention program | (2) | 3 | 26
LTRP 2018 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Long term retention program | (1) | 2 | 12
LTRP 2019 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Long term retention program | 16 | 27 | 29
LTRP 2020 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Long term retention program | 19 | 29 | 30
LTRP 2021 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Long term retention program | 21 | 26 | 0
LTRP 2022 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Long term retention program | $ 31 | $ 0 | $ 0

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