Lease Obligations (Tables)

12 Months Ended

Mar. 31, 2014

Leases, Operating [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

(In millions)	Noncancelable Operating Leases
2015	$	358
2016	299
2017	246
2018	193
2019	168
Thereafter	806
Total minimum lease payments (1)	$	2,070

(1) Minimum lease payments have not been reduced by minimum sublease rentals of $44 million due under future noncancelable subleases.