Consolidated Statements of Shareholder's Equity - USD ($) $ in Millions	Total	Capital stock	Additional paid-in capital	Accumulated other comprehensive income	Retained earnings
Balance at Mar. 31, 2014	$ 7,738	$ 915	$ 2	$ 200	$ 6,621
Net income	1,197				1,197
Other comprehensive income (loss) net of tax	20			20
Dividends	(435)				(435)
Balance at Mar. 31, 2015	8,520	915	2	220	7,383
Net income	932				932
Other comprehensive income (loss) net of tax	(55)			(55)
Balance at Mar. 31, 2016	9,397	915	2	165	8,315
Net income	267				267
Other comprehensive income (loss) net of tax	(140)			(140)
Balance at Mar. 31, 2017	$ 9,524	$ 915	$ 2	$ 25	$ 8,582