Background and Basis of Presentation (Share Repurchase Table) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Equity, Class of Treasury Stock [Line Items]
Aggregate cost of shares repurchased	$ 326	$ 2,400
January 2024 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Total number of shares repurchased (shares)	5.7
Aggregate cost of shares repurchased	$ 326
Average price of repurchased shares, per share (usd per share)	$ 56.97
Stock repurchase program, remaining authorized repurchase amount	$ 674
Accelerated share repurchases, percentage of stock received		15.00%
January 2023 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Total number of shares repurchased (shares)		46.5
Aggregate cost of shares repurchased		$ 2,040
Average price of repurchased shares, per share (usd per share)		$ 43.87
ASR Agreements [Member]
Equity, Class of Treasury Stock [Line Items]
Total number of shares repurchased (shares)		46.5
Aggregate cost of shares repurchased		$ 2,040
Stock repurchase program, remaining authorized repurchase amount		$ 360
Accelerated share repurchases, percentage of stock received		15.00%

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

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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