Trade Accounts Receivable (Tables)

9 Months Ended

Dec. 31, 2012

Receivables [Abstract]

Components of trade accounts receivable, net

The components of “Trade accounts receivable, net” were as follows:

	December 31, 2012			March 31, 2012
	(in millions)
Accounts receivable – billed	$	727		$	812
Accounts receivable – unbilled	69			80
Other receivables	13			26
Less: Allowances	(23		)	(16		)
Trade accounts receivable, net	$	786		$	902