Restructuring, Separation, Transition and Other Costs (Schedule of the Restructuring and Separation Liabilities Summary) (Details) - Fiscal 2017 Plan: $ in Millions	3 Months Ended
	Jun. 30, 2017 USD ($)
Restructuring Reserve [Roll Forward]
Balance as of March 31, 2017	$ 46
Restructuring, transition and other	60
Cash Payments	(52)
Non-Cash Charges	(8)
Balance as of June 30, 2017	46
Cumulative Incurred to Date for FY17 Plan	238
Severance and termination costs
Restructuring Reserve [Roll Forward]
Balance as of March 31, 2017	20
Restructuring, transition and other	27
Cash Payments	(32)
Non-Cash Charges	0
Balance as of June 30, 2017	15
Cumulative Incurred to Date for FY17 Plan	103
Other exit and disposal costs
Restructuring Reserve [Roll Forward]
Balance as of March 31, 2017	26
Restructuring, transition and other	32
Cash Payments	(20)
Non-Cash Charges	(7)
Balance as of June 30, 2017	31
Cumulative Incurred to Date for FY17 Plan	111
Asset write-offs
Restructuring Reserve [Roll Forward]
Balance as of March 31, 2017	0
Restructuring, transition and other	1
Cash Payments	0
Non-Cash Charges	(1)
Balance as of June 30, 2017	0
Cumulative Incurred to Date for FY17 Plan	$ 24