Restructuring Costs - Narrative (Details) $ in Millions	Jun. 30, 2017 USD ($)
Fiscal 2017 Plan
Restructuring Cost and Reserve [Line Items]
Total Costs Incurred to Date	$ 238
Fiscal 2017 Plan | Workforce Reductions
Restructuring Cost and Reserve [Line Items]
Total Costs Incurred to Date	233
Fiscal 2017 Plan | Facilities Costs
Restructuring Cost and Reserve [Line Items]
Total Costs Incurred to Date	5
Fiscal 2016 Plan
Restructuring Cost and Reserve [Line Items]
Total Costs Incurred to Date	59
Fiscal 2016 Plan | Workforce Reductions
Restructuring Cost and Reserve [Line Items]
Total Costs Incurred to Date	26
Fiscal 2016 Plan | Facilities Costs
Restructuring Cost and Reserve [Line Items]
Total Costs Incurred to Date	33
Fiscal 2015 Plan
Restructuring Cost and Reserve [Line Items]
Total Costs Incurred to Date	228
Fiscal 2015 Plan | Workforce Reductions
Restructuring Cost and Reserve [Line Items]
Total Costs Incurred to Date	220
Fiscal 2015 Plan | Facilities Costs
Restructuring Cost and Reserve [Line Items]
Total Costs Incurred to Date	$ 8