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Equity-Based Compensation - NonOptions (Detail) $ / shares in Units, $ in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 04, 2024 $ / shares | Feb. 29, 2024 shares | Dec. 31, 2024 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares | Dec. 31, 2022 USD ($)
Stericycle [Member] |  |  |  |  |
Equity-Based Compensation |  |  |  |  |
Grants conversion factor | 0.289171 |  |  |  |
Business acquisition cost (dollars per share) | $ / shares | $ 62 |  |  |  |
Restricted Stock Units [Member] |  |  |  |  |
Equity-Based Compensation |  |  |  |  |
Shares issued under the plan |  |  | 86,000 |  |
Unvested, Units, beginning of year |  |  | 371,000 |  |
Granted, Units |  |  | 237,000 |  |
Vested, Units |  |  | (122,000) |  |
Forfeited, Units |  |  | (14,000) |  |
Unvested, Units, end of year |  |  | 472,000 | 371,000 |
Unvested, Weighted Average Per Share Fair Value, beginning of year | $ / shares |  |  | $ 139.37 |  |
Granted, Weighted Average Per Share Fair Value | $ / shares |  |  | 209.86 |  |
Vested, Weighted Average Per Share Fair Value | $ / shares |  |  | 119.1 |  |
Forfeited, Weighted Average Per Share Fair Value | $ / shares |  |  | 163.18 |  |
Unvested, Weighted Average Per Share Fair Value, end of year | $ / shares |  |  | $ 179.25 | $ 139.37 |
Total fair market value of vested awards | $ |  |  | $ 25 | $ 15 | $ 15
Equity compensation tax payments (in shares) |  |  | 36,000 |  |
Vesting period |  |  | 3 years |  |
Performance Share Units [Member] |  |  |  |  |
Equity-Based Compensation |  |  |  |  |
Potential payout (as a percent) |  |  | 100.00% |  |
Shares issued under the plan |  | 406,000 |  |  |
Unvested, Units, beginning of year |  |  | 881,000 |  |
Granted, Units |  |  | 281,000 |  |
Vested, Units |  | (617,000) | (309,000) |  |
Forfeited, Units |  |  | (24,000) |  |
Unvested, Units, end of year |  |  | 829,000 | 881,000 |
Unvested, Weighted Average Per Share Fair Value, beginning of year | $ / shares |  |  | $ 150.77 |  |
Granted, Weighted Average Per Share Fair Value | $ / shares |  |  | 255.98 |  |
Vested, Weighted Average Per Share Fair Value | $ / shares |  |  | 122.58 |  |
Forfeited, Weighted Average Per Share Fair Value | $ / shares |  |  | 200.21 |  |
Unvested, Weighted Average Per Share Fair Value, end of year | $ / shares |  |  | $ 195.49 | $ 150.77 |
Total fair market value of vested awards | $ |  |  | $ 121 | $ 74 | $ 91
Vesting period |  |  | 3 years | 3 years |
Performance Share Units [Member] | Minimum [Member] |  |  |  |  |
Equity-Based Compensation |  |  |  |  |
Potential payout (as a percent) |  |  | 0.00% |  |
Performance Share Units [Member] | Maximum [Member] |  |  |  |  |
Equity-Based Compensation |  |  |  |  |
Potential payout (as a percent) |  |  | 200.00% |  |
Total Shareholder Return Award [Member] |  |  |  |  |
Equity-Based Compensation |  |  |  |  |
Actual payout (as a percent) |  |  |  | 200.00% |
Cash Flow Award [Member] |  |  |  |  |
Equity-Based Compensation |  |  |  |  |
Actual payout (as a percent) |  |  |  | 200.00% |
Deferred Units [Member] |  |  |  |  |
Equity-Based Compensation |  |  |  |  |
Share-based awards outstanding (in shares) |  |  | 183,000 |  |

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