Pension Benefits - Schedule of Net Periodic Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the year	$ 1	$ 0	$ 3	$ 1
Interest cost on projected benefit obligation	4	5	13	14
Expected return on assets	(5)	(5)	(14)	(16)
Amortization of unrecognized actuarial loss and prior service costs	11	5	32	15
Curtailment loss (gain)	0	0	0	0
Net periodic pension expense	11	5	34	14
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the year	4	4	14	13
Interest cost on projected benefit obligation	6	8	18	26
Expected return on assets	(7)	(8)	(23)	(23)
Amortization of unrecognized actuarial loss and prior service costs	1	1	3	3
Curtailment loss (gain)	0	5	0	5
Net periodic pension expense	$ 4	$ 10	$ 12	$ 24