Supplemental Information (Tables)

12 Months Ended

Mar. 31, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental cash flow information

Supplemental cash flow information is as follows (in millions).

	Year Ended March 31,
	2015		2014		2013
Supplemental disclosures of cash flow information:
Interest paid	$	303	$	278	$	271
Income taxes paid	$	131	$	120	$	121