Earnings Per Share and Common Stock - Share Repurchases (Details) - 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
Earnings Per Share [Abstract]
Number of shares	1,229,313	1,006,102	734,737	2,243,259	2,235,415	2,977,996
Average price per share (in usd per share)	$ 142.36	$ 124.24	$ 81.66	$ 66.87	$ 134.20	$ 70.52
Total	$ 175	$ 125	$ 60	$ 150	$ 300	$ 210

Number of shares that have been repurchased and retired during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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-Topic 505
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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-Name Accounting Standards Codification
-Section S99
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
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Period Type:	duration