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Stock-Based Compensation (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	8.8
Maximum shares available for grants (in shares)	7.7
Settled performance share units and restricted stock units	$ 24	$ 60	$ 47
Compensation cost not yet recognized	$ 39
Expected weighted average recognition period for share-based compensation expense, in months	23 months
Income taxes
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options	$ (1)	$ 6	$ 5
Performance Share Units \| Market Condition PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares issued per share unit, minimum	0.00%
Percentage of shares issued per share unit, maximum	200.00%
Performance Share Units \| Performance Condition PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Share-Based Compensation Arrangement By Share-Based Payment Award, Extended Award Vesting Period	38 months
Award Requisite Service Period	5 years
Percentage of shares issued per share unit, minimum	0.00%
Percentage of shares issued per share unit, maximum	200.00%
Performance Share Units \| Market Condition PSUs February Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Share-Based Compensation Arrangement By Share-Based Payment Award, Extended Award Vesting Period	38 months
Award Requisite Service Period	5 years
Percentage of shares issued per share unit, minimum	0.00%
Percentage of shares issued per share unit, maximum	200.00%
Stock Issued During Period Percentage Conversion Of Units, Mid-point	100.00%
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	38 months
Award Requisite Service Period	5 years