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, 2016	$ 9,397	$ 915	$ 2	$ 165	$ 8,315
Net income	241	0	0	0	241
Other comprehensive income (loss), net of tax	28	0	0	28	0
Balance at Jun. 30, 2016	9,666	915	2	193	8,556
Balance at Mar. 31, 2017	9,524	915	2	25	8,582
Net income	165	0	0	0	165
Other comprehensive income (loss), net of tax	(8)	0	0	(8)	0
Balance at Jun. 30, 2017	$ 9,681	$ 915	$ 2	$ 17	$ 8,747