Employee Benefits - Other Benefit Plans (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Retirement Benefits [Abstract]
Active health care benefit expenses	$ 281	$ 288	$ 296
Participating employees' contribution to health care plan	$ 79	$ 89	101
Common stock included in the assets of the Defined Contribution Plan (in shares)	8	9
Expenses related to the 401(k) Plan	$ 82	$ 87	$ 91