Guarantees, Contingencies and Commitments (Tables)

12 Months Ended

Dec. 31, 2019

Commitments And Contingencies Disclosure [Abstract]

Schedule of Unconditional Purchase Obligations and Commitments

The following table shows aggregate information for certain unconditional purchase obligations and commitments at December 31, 2019, which are not included elsewhere within these Consolidated Financial Statements:

			Payments Due by Period
					2021 and		2023 and
	Total		2020		2022		2024		Thereafter
	(In millions)
Capital expenditures	$	1,743	$	913	$	755	$	75	$	—
Operating expenses		190		158		20		9		3
Transportation and related contracts		1,009		231		424		246		108