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Supplemental Income (Loss) Statement Information - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Income and Expenses [Abstract]
Interest expense related to outstanding debt	$ 472	$ 565	$ 462
Settlements, curtailments, special termination benefits and other	808
Unrealized gain on investments	$ 1,600

X

- Definition

Amount of (increase) decrease in accumulated benefit obligation of defined benefit plan from effects of settlement and curtailment.

+ References

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-Name Accounting Standards Codification
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-Section 50
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X

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

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-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
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X

- Definition

Amount of unrealized gain (loss) on investment.

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