Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Payments under Non-Cancelable Operating Leases

The following table presents future minimum payments under non-cancelable operating leases with initial or remaining terms in excess of one year at December 31, 2018.

	Real Estate			Equipment		Total
	(in millions)
2019	$	111		$	4	$	115
2020	132			2		134
2021	81			1		82
2022	73			—		73
2023	65			—		65
Thereafter	506			—		506
Total minimum payments required	968			7		975
Sublease rentals under non-cancelable leases	(7		)	—		(7		)
Net minimum payments required	$	961		$	7	$	968