Restructuring, Separation, Transition and Other Costs (Schedule of the Restructuring, Separation and Transition Expense Summary) (Details) - Fiscal 2017 Plan: $ in Millions	3 Months Ended
	Jun. 30, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 60
Total restructuring, transition and other	88
Continuing Operations
Restructuring Cost and Reserve [Line Items]
Transition costs	28
Severance and termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring costs	27
Severance and termination benefits | Continuing Operations
Restructuring Cost and Reserve [Line Items]
Restructuring costs	27
Other exit and disposal costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	32
Other exit and disposal costs | Continuing Operations
Restructuring Cost and Reserve [Line Items]
Restructuring costs	32
Asset write-offs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	1
Asset write-offs | Continuing Operations
Restructuring Cost and Reserve [Line Items]
Restructuring costs	1
Minimum
Restructuring Cost and Reserve [Line Items]
Expected cost	430
Minimum | Severance and termination benefits
Restructuring Cost and Reserve [Line Items]
Expected cost	185
Minimum | Other exit and disposal costs
Restructuring Cost and Reserve [Line Items]
Expected cost	205
Maximum
Restructuring Cost and Reserve [Line Items]
Expected cost	480
Maximum | Severance and termination benefits
Restructuring Cost and Reserve [Line Items]
Expected cost	195
Maximum | Other exit and disposal costs
Restructuring Cost and Reserve [Line Items]
Expected cost	$ 230