Lease Obligations (Tables)

12 Months Ended

Mar. 31, 2012

Lease Obligations [Abstract]

Schedule Of Future Minimum Rental Payments For Operating Leases

		Noncancelable
		Operating
(In millions)		Leases
2013	$	188
2014		157
2015		123
2016		92
2017		75
Thereafter		233
Total minimum lease payments (1)	$	868

(1) Minimum lease payments have not been reduced by minimum sublease rentals of $74 million due under future noncancelable subleases.