Consolidated Statement of Shareholder's Equity (USD $) In Millions	Total	Capital stock	Additional paid-in capital	Accumulated other comprehensive income	Retained earnings
Balance at Mar. 31, 2010	$ 5,273	$ 915	$ 1	$ 104	$ 4,253
Net income	1,853	0	0	0	1,853
Other comprehensive income (loss), net of tax	(4)	0	0	(4)	0
Stock-based compensation	0
Dividends	(266)	0	0	0	(266)
Balance at Mar. 31, 2011	6,856	915	1	100	5,840
Net income	1,486	0	0	0	1,486
Other comprehensive income (loss), net of tax	60	0	0	60	0
Stock-based compensation	1	0	1	0	0
Dividends	(741)	0	0	0	(741)
Balance at Mar. 31, 2012	7,662	915	2	160	6,585
Net income	1,331	0	0	0	1,331
Other comprehensive income (loss), net of tax	51	0	0	51	0
Stock-based compensation	0	0	0	0	0
Dividends	(1,487)	0	0	0	(1,487)
Balance at Mar. 31, 2013	$ 7,557	$ 915	$ 2	$ 211	$ 6,429