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

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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Amount of increase (decrease) in obligation for pension benefits. Includes, but is not limited to, defined benefit or defined contribution plans. Excludes other postretirement benefits.

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Pension and Postretirement Plans (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
United States
Defined Benefit Plan Disclosure [Line Items]
Company contributions to plans			$ 13
Additional contributions expected to be made during remainder of fiscal year	$ 24		24
Pension Benefits \| United States
Defined Benefit Plan Disclosure [Line Items]
Pension settlement expense	$ (39)	$ (2)	(39)	$ (6)
Increase (decrease) in obligation pension benefits			$ 300
Discount rate	2.70%		2.70%		3.30%
Pension Benefits \| United States \| Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Pension settlement expense			$ 34
Pension Benefits \| United States \| Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Pension settlement expense			5
Pension Benefits \| Int’l.
Defined Benefit Plan Disclosure [Line Items]
Company contributions to plans			13
Additional contributions expected to be made during remainder of fiscal year	$ 13		13
Pension settlement expense	$ 0	$ 0	$ 0	$ 0