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Stock Compensation Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
RSUs | Cliff |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Performance-Based RSUs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted-average fair value of awards granted (in dollars per share) | $ 79.93 | $ 77.91 | $ 77.67
Total fair value of awards that vested | $ 21 | $ 18 | $ 15
Total unrecognized stock compensation expense | $ 15 |  |
Weighted average period to recognize unrecognized compensation cost | 1 year 9 months 7 days |  |
Performance-Based RSUs | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of target award available for grant | 0.00% |  |
Performance-Based RSUs | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of target award available for grant | 200.00% |  |
Performance-Based RSUs | Cliff |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Time-Based RSUs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted-average fair value of awards granted (in dollars per share) | $ 73.13 | $ 78.15 | $ 71.88
Total fair value of awards that vested | $ 39 | $ 30 | $ 23
Total unrecognized stock compensation expense | $ 28 |  |
Weighted average period to recognize unrecognized compensation cost | 1 year 9 months 3 days |  |
2021 Stock Incentive Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares outstanding other than RSUs (in shares) | 0 | 0 | 0
Common stock, shares authorized (in shares) | 17,000,000 |  |
Shares available (in shares) | 4,000,000 |  |

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