Stock-Based Compensation - Stock-based Compensation Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Unrecognized Compensation	$ 57
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at January 1 (in shares)	6,314	4,672	3,221
Outstanding at January 1 (in dollars per share)	$ 15.48	$ 18.46	$ 23.16
Granted (in shares)	8,951	4,159	3,382
Granted (in dollars per share)	$ 5.51	$ 14.09	$ 16.56
Vested (in shares)	(2,370)	(2,030)	(1,593)
Vested (in dollars per share)	$ 17.78	$ 19.04	$ 23.73
Forfeited/Expired (in shares)	(973)	(487)	(338)
Forfeited/Expired (in dollars per share)	$ 8.20	$ 17.27	$ 19.27
Outstanding at December 31 (in shares)	11,922	6,314	4,672
Outstanding at December 31 (in dollars per share)	$ 8.13	$ 15.48	$ 18.46
Unrecognized Compensation	$ 50
Remaining Weighted-Average Vesting Period (Years)	1 year 9 months 18 days
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at January 1 (in shares)	2,066	2,039	1,729
Outstanding at January 1 (in dollars per share)	$ 21.59	$ 24.18	$ 28.38
Granted (in shares)	1,912	1,243	940
Granted (in dollars per share)	$ 4.46	$ 13.89	$ 22.97
Vested (in shares)	0	0	0
Vested (in dollars per share)	$ 0	$ 0	$ 0
Forfeited/Expired (in shares)	(1,560)	(1,216)	(630)
Forfeited/Expired (in dollars per share)	$ 15.67	$ 17.67	$ 33.86
Outstanding at December 31 (in shares)	2,418	2,066	2,039
Outstanding at December 31 (in dollars per share)	$ 11.87	$ 21.59	$ 24.18
Unrecognized Compensation	$ 5
Remaining Weighted-Average Vesting Period (Years)	2 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Unrecognized Compensation	$ 2
Remaining Weighted-Average Vesting Period (Years)	1 year

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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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.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ 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

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
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-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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