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Stock-Based Compensation - Stock Options, Restricted Awards and Performance Awards Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 01, 2025 | Apr. 01, 2021 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Apr. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of additional shares authorized (in shares) | 2,254,405 |  |  |  |  |
Shares available for issuance (in shares) |  |  | 6,000,000 |  |  |
Options granted (in shares) |  |  | 0 | 0 | 0 |
Stock option exercised (in shares) |  |  | 1,582,483 | 763,217 | 4,322,711 |
Exercised, aggregate grant date fair value |  |  | $ 8 | $ 4 | $ 26 |
Aggregate grant date fair value (less than) |  |  | 1 |  |  |
Unrecognized compensation cost related to unvested stock options |  |  | $ 0 |  |  |
Contractual term (in years) |  |  | 2 years 9 months 18 days |  |  |
Stock option |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Service period (in years) |  |  | 4 years |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Aggregate fair value |  |  | $ 14 | $ 16 | $ 13 |
Unrecognized compensation cost |  |  | $ 23 |  |  |
Unrecognized compensation cost, period for recognition (in years) |  |  | 2 years |  |  |
Restricted stock units issued (in shares) |  |  | 3,183,136 | 1,927,340 | 6,176,938 |
Weighted average grant date fair value (in dollars per share) |  |  | $ 6.12 | $ 5.40 | $ 5.88 |
Vested (in shares) |  |  | 1,738,955 | 1,678,489 | 800,189 |
Forfeited (in shares) |  |  | 430,026 | 699,880 | 549,950 |
Restricted Stock Units (RSUs) | Director |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Service period (in years) |  |  | 1 year |  |  |
Restricted Stock Units (RSUs) | Minimum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Service period (in years) |  |  | 3 years |  |  |
Restricted Stock Units (RSUs) | Maximum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Service period (in years) |  |  | 4 years |  |  |
Performance Shares |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Unrecognized compensation cost |  |  | $ 6 |  |  |
Unrecognized compensation cost, period for recognition (in years) |  |  | 1 year 8 months 12 days |  |  |
Vested (in shares) |  |  | 0 |  | 0 |
Forfeited (in shares) |  |  |  | 0 |  |
Performance Shares | Adjusted Pre-Tax Margin |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Weighted average grant date fair value (in dollars per share) |  |  | $ 8.09 |  |  |
Performance Shares | Total Shareholder Return |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Weighted average grant date fair value (in dollars per share) |  |  | $ 11.75 |  |  |
Performance Shares | Minimum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Service period (in years) |  |  | 1 year |  |  |
Award vesting percentage (as a percent) |  |  | 0.00% |  |  |
Performance Shares | Maximum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Service period (in years) |  |  | 3 years |  |  |
Award vesting percentage (as a percent) |  |  | 200.00% |  |  |
2014 Equity Incentive Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Common stock reserved for issuance (in shares) |  |  |  |  |  | 38,000,000
2021 Equity Incentive Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Common stock reserved for issuance (in shares) |  | 7,000,000 |  |  |  |
Common stock issued (in shares) |  | 11,000,000 |  |  |  |
Maximum number of shares of stock that may be issued upon the exercise of incentive stock options (as a percent) |  | 1.00% |  |  |  |
Maximum number of shares of stock that may be issued upon the exercise of incentive stock options (in shares) |  | 30,000,000 |  |  |  |
2021 LTI Plan | Performance Shares |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Restricted stock units issued (in shares) |  |  | 1,199,038 | 0 | 0 |
2021 LTI Plan | Performance Shares | Adjusted Pre-Tax Margin |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Options granted (in shares) |  |  | 710,136 |  |  |
2021 LTI Plan | Performance Shares | Total Shareholder Return |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Options granted (in shares) |  |  | 488,902 |  |  |

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