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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, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Equity, Class of Treasury Stock [Line Items]            
Retirement of treasury stock (in shares) 2,443,610 3,070,996 1,114,400 1,163,230 5,514,606 2,277,630
Average price paid per share (in usd per share) $ 73.01 $ 58.23 $ 33.84 $ 32.67    
Retirement of treasury stock $ 178 $ 179 $ 38 $ 38 $ 357 $ 76