CONDENSED CONSOLIDATED COMBINED STATEMENTS OF OPERATIONS (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenue	$ 1,172	$ 1,068	$ 2,279	$ 1,861
Costs of services	908	813	1,744	1,410
Selling, general and administrative	81	89	153	150
Depreciation and amortization	90	74	191	138
Restructuring costs	2	2	4	2
Separation, transaction and integration-related costs	20	21	39	65
Interest expense, net	36	37	71	47
Other income, net	(2)	(4)	(2)	(28)
Total costs and expenses	1,135	1,032	2,200	1,784
Income before taxes	37	36	79	77
Income tax expense	8	12	19	24
Net income	$ 29	$ 24	$ 60	$ 53
Earnings per common share:
Basic (in dollars per share)	$ 0.18	$ 0.15	$ 0.37	$ 0.32
Diluted (in dollars per share)	$ 0.18	$ 0.14	$ 0.37	$ 0.32