Income (Loss) per Share (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Basic weighted average common shares outstanding (in shares)	849	881	857	885
Dilutive effect of awards granted under our stock incentive plans	1	0	1	1
Diluted weighted average common shares outstanding (in shares)	850	881	858	886
Accumulated other comprehensive loss	$ (354)		$ (354)		$ (353)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	125	$ 41	125	$ 41
Accumulated Other Comprehensive Income Loss Other Net Of Tax	$ (37)		$ (37)		$ (37)
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options with exercise price greater than the average market price	8	9	9	10
Total antidilutive shares	8	9	9	10

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Securities that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would have been antidilutive for the period presented.

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Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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