Employee Benefit Plans - Amounts Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Before tax basis amount in accumulated other comprehensive loss.
Total recognized	$ 3,376	$ 3,792
Other Benefits
Before tax basis amount in accumulated other comprehensive loss.
Net actuarial (gain) loss	(401)	(266)
Prior service (credits) costs	(34)	(89)
Total recognized	(435)	(355)
U.S. \| Pension Benefits
Before tax basis amount in accumulated other comprehensive loss.
Net actuarial (gain) loss	2,796	3,161
Prior service (credits) costs	33	37
Total recognized	2,829	3,198
Int’l. \| Pension Benefits
Before tax basis amount in accumulated other comprehensive loss.
Net actuarial (gain) loss	849	823
Prior service (credits) costs	133	126
Total recognized	$ 982	$ 949

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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