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Divestitures - Fiscal 2016 Divestiture (Details) - USD ($)
12 Months Ended
Mar. 31, 2017
Apr. 01, 2016
Apr. 03, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Separation costs   $ 122,000,000  
Spin-off costs $ 0 19,000,000 $ 0
Discontinued Operations, Disposed of by Sale      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain (loss) on disposal   0  
Welkin Associates Limited | Discontinued Operations, Disposed of by Sale      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Amount of cash consideration received   34,000,000  
Net gain on disposition of business   22,000,000  
Income from Discontinued Operations      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Spin-off costs   $ 103,000,000