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Stock-Based Compensation - Compensation Expense (Details) - Executives - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
SGI awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SGI awards	$ 51	$ 58
SGI awards | Corporate general and administrative expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based liabilities paid	30	34	$ 54
Performance-based awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SGI awards	30	29
Performance-based awards | Corporate general and administrative expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based liabilities paid	$ 14	$ 21	$ 14

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

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