Income Taxes 2 (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Current:
Federal	$ 190	$ 271	$ 267
State	33	39	37
Foreign	(14)	31	119
Total current	209	341	423
Deferred:
Federal	(82)	(18)	4
State	(12)	3	(22)
Foreign	25	28	2
Total deferred	(69)	13	(16)
Total:
Federal	108	253	271
State	21	42	15
Foreign	11	59	121
Income tax expense from continuing operations	$ 140	$ 354	$ 407