Lease Obligations (Tables)

12 Months Ended

Mar. 31, 2018

Leases, Operating [Abstract]

Schedule of future minimum rental payments for operating leases

At March 31, 2018, future minimum lease payments required under operating leases that have initial or remaining noncancelable lease terms in excess of one year for years ending March 31 are:

(In millions)	Noncancelable Operating Leases
2019	$	502
2020	443
2021	383
2022	333
2023	277
Thereafter	1,134
Total minimum lease payments (1)	$	3,072

(1) Amount includes future minimum lease payments for the sale-leaseback transaction of $62 million. Minimum lease payments have not been reduced by minimum sublease income of $147 million due under future noncancelable subleases.