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Changes in Capital Structure - Treasury Stock Retirements (Details) - Treasury Stock - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2024
Equity, Class of Treasury Stock [Line Items]
Retirement of treasury stock (in shares)	1,114,400	1,163,230	2,277,630
Average price paid per share (in usd per share)	$ 33.84	$ 32.67
Retirement of treasury stock	$ 38	$ 38	$ 76

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Total cost of shares repurchased divided by the total number of shares repurchased.

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-Name Accounting Standards Codification
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-SubTopic 30
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Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the cost method.

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Number of shares of common and preferred stock retired from treasury during the period.

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