Supplemental Financial Information - Other, net in Net cash from operating activities (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Cash flow disclosures
Payment of cash taxes	$ 195	$ 270
Defined Benefit Plans
Cash flow disclosures
Pension contributions	$ 334	$ 16

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration