Leases (Tables)

12 Months Ended

Dec. 31, 2018

Leases [Abstract]

Future Minimum Rental Commitments

Future Minimum Lease Commitments
(In millions)	Operating Leases		Financing Obligation
2019	$	82	$	753
2020	70		809
2021	57		822
2022	53		836
2023	51		855
Thereafter	966		34,333
Total minimum rental commitments	$	1,279	$	38,408