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Share-Based Compensation - Summary of Activities Under Share-Based Compensation Plans (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Outstanding and nonvested as of December 31, 2023, Number of Shares | [1] | 6,118 |  |
Granted, Number of Shares |  | 5,445 |  |
Vested, Number of Shares |  | (2,626) |  |
Forfeited, Number of Shares | [2] | (2,648) |  |
Outstanding and nonvested as of December 31, 2024, Shares | [1] | 6,289 | 6,118 |
Number of Shares, Expected to vest, Ending Balance |  | 6,112 |  |
Outstanding and nonvested as of December 31, 2023, Weighted Average Grant Date Fair Value Per Share | [1] | $ 20.76 |  |
Granted, Weighted Average Grant Date Fair Value Per Share |  | 9.41 |  |
Vested, Weighted Average Grant Date Fair Value Per Share |  | 21.35 |  |
Forfeited, Weighted Average Grant Date Fair Value Per Share | [2] | 16.32 |  |
Outstanding and nonvested as of December 31, 2024, Weighted Average Grant Date Fair Value Per Share | [1] | 12.56 | $ 20.76 |
Expected to vest as of December 31, 2024, Weighted Average Grant Date Fair Value Per Share |  | $ 12.58 |  |
Stock Appreciation Rights (SARs) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of Awards Outstanding, Beginning Balance | [3] | 4,340 |  |
Granted, Number of Awards | [4] | 7,364 |  |
Forfeited/expired, Number of Awards | [5] | (702) |  |
Number of Awards Outstanding, Ending Balance | [3] | 11,002 | 4,340 |
Number of Awards Exercisable, Ending Balance | [6] | 2,676 |  |
Number of Awards Vested and expected to vest, Ending Balance | [7] | 7,367 |  |
Weighted Average Exercise Price Per Award Outstanding, Beginning Balance | [3] | $ 19.85 |  |
Granted, Weighted Average Exercise Price Per Award | [4] | 8.6 |  |
Forfeited/expired, Weighted Average Exercise Price Per Award | [5] | 22.97 |  |
Weighted Average Exercise Price Per Award Outstanding, Ending Balance | [3] | 12.12 | $ 19.85 |
Exercisable, Weighted Average Exercise Price Per Award, Ending Balance | [6] | 20.39 |  |
Weighted Average Exercise Price Per Award, Vested and expected to vest, Ending Balance | [7] | $ 14.04 |  |
Weighted Average Remaining Contractual Term Outstanding | [3] | 7 years 1 month 6 days | 6 years 4 months 24 days |
Exercisable Weighted Average Remaining Contractual Term | [6] | 4 years 10 months 24 days |  |
Weighted Average Remaining Contractual Term, Vested and expected to vest | [7] | 7 years 7 months 6 days |  |
Aggregate Intrinsic Value Outstanding | [3],[8] | $ 0.0 | $ 2.4 |
Exercisable, Aggregate Intrinsic Value | [6],[8] | 0.0 |  |
Aggregate Intrinsic Value, Vested and expected to vest | [7],[8] | $ 0.0 |  |
Granted, Weighted Average Grant Date Fair Value Per Share |  | $ 4.61 | $ 7.83 | $ 6.38
[1] | Includes zero and 307,116 performance based stock unit awards as of December 31, 2024 and 2023, respectively, which represents the maximum amount that can vest.
[2] | Includes 307,116 performance-based stock unit awards.
[3] | Includes 4.0 million and 0.6 million performance condition SARs as of December 31, 2024 and 2023, respectively.
[4] | Includes 3.4 million performance condition SARs granted to a consultant.
[5] | Includes 0.1 million performance condition SARs.
[6] | Includes 0.6 million performance condition SARs.
[7] | Includes 0.6 million performance condition SARs.
[8] | The intrinsic value is the amount by which the current market value of the underlying stock exceeds the exercise price of the stock awards.

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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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