Net Income (Loss) Per Share (Tables)

12 Months Ended

Mar. 31, 2013

Earnings Per Share Reconciliation [Abstract]

Computation Of Basic Earnings And Diluted Earnings Per Share

The following table summarizes the computations of basic earnings per share (“Basic EPS”) and diluted earnings per share (“Diluted EPS”). Basic EPS is computed as net income (loss) divided by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur from common shares issuable through stock-based compensation plans including stock options, restricted stock, restricted stock units, common stock through our ESPP, warrants, and other convertible securities using the treasury stock method.

	Year Ended March 31,
(In millions, except per share amounts)	2013		2012		2011
Net income (loss)	$	98	$	76	$	(276	)
Shares used to compute net income (loss) per share:
Weighted-average common stock outstanding — basic	310		331		330
Dilutive potential common shares	3		5		—
Weighted-average common stock outstanding — diluted	313		336		330
Net income (loss) per share:
Basic	$	0.32	$	0.23	$	(0.84	)
Diluted	$	0.31	$	0.23	$	(0.84	)