Stockholder's Equity (Accumulated Other Comprehensive Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Before Tax Income (Loss) [Abstract]
Gain (loss) on foreign currency forward and option contracts, Before Tax Amount			$ (8)
Total other comprehensive income (loss), Before Tax Amount	(4)	251	(112)	169
Tax Expense [Abstract]
Gain (loss) on foreign currency forward and option contracts, Tax Expense			0
Total other comprehensive income (loss), Tax (Expense)/Benefit	(36)	0	(37)	(2)
Net of Tax Income (Loss) [Abstract]
Foreign currency translation adjustments, Net of Tax Amount			(139)	168
Gain (loss) on foreign currency forward and option contracts, Net of Tax Amount			(8)
Total pension and other post-retirement benefit plans, Net of Tax Amount	(52)	(260)	(48)	(260)
Other comprehensive (loss) income, net of taxes	(40)	251	(149)	167
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period			279	108
Current-period other comprehensive (loss) income, net of taxes			(139)	168
Amounts reclassified from accumulated other comprehensive loss, net of taxes			1	(10)
Balance at end of period	141	266	141	266
Accumulated Translation Adjustment [Member]
Before Tax Income (Loss) [Abstract]
Foreign currency translation adjustments, Before Tax Amount	(90)	(9)	(188)	(91)
Tax Expense [Abstract]
Foreign currency translation adjustments, Tax (Expense)/Benefit	0	0	(1)	(2)
Net of Tax Income (Loss) [Abstract]
Foreign currency translation adjustments, Net of Tax Amount	(90)	(9)	(189)	(93)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Current-period other comprehensive (loss) income, net of taxes	(90)	(9)	(189)	(93)
Cash Flow Hedge [Member]
Before Tax Income (Loss) [Abstract]
Gain (loss) on foreign currency forward and option contracts, Before Tax Amount	(2)
Tax Expense [Abstract]
Gain (loss) on foreign currency forward and option contracts, Tax Expense	0
Net of Tax Income (Loss) [Abstract]
Foreign currency translation adjustments, Net of Tax Amount			(8)
Gain (loss) on foreign currency forward and option contracts, Net of Tax Amount	(2)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period			0
Current-period other comprehensive (loss) income, net of taxes			(8)
Amounts reclassified from accumulated other comprehensive loss, net of taxes			0
Balance at end of period	(8)		(8)
Accumulated Defined Benefit Plans Adjustment [Member]
Before Tax Income (Loss) [Abstract]
Net actuarial gain (loss), Before Tax Amount				2
Prior service cost (credit), Before Tax Amount	97	260	97	260
Amortization of transition obligation, Before Tax Amount		1	1	1
Amortization of prior service (credit) / cost, Before Tax Amount	(9)	(1)	(14)	(2)
Foreign currency exchange rate changes, Before Tax Amount				(1)
Tax Expense [Abstract]
Net actuarial gain (loss), Tax (Expense)/Benefit				0
Prior service cost (credit), Tax Expense	(39)	0	(39)	0
Amortization of transition obligation, Tax (Expense)/Benefit		0	0	0
Amortization of prior service (credit) / cost, Tax (Expense)/Benefit	3	0	3	0
Foreign currency exchange rate changes, Tax (Expense)/Benefit				0
Net of Tax Income (Loss) [Abstract]
Net actuarial gain (loss), Net of Tax Amount				2
Prior service cost (credit), Net of Tax Amount	58	260	58	260
Amortization of transition obligation, Net of Tax Amount		1	1	1
Amortization of prior service (credit) / cost, Net of Tax Amount	(6)	(1)	(11)	(2)
Foreign currency exchange rate changes, Net of Tax Amount				(1)
Other Pension and Other Post-retirement Benefit Plans [Member]
Before Tax Income (Loss) [Abstract]
Total pension and other post-retirement benefit plans, Before Tax Amount	88	260	84	260
Tax Expense [Abstract]
Total pension and other post-retirement benefit plans, Tax (Expense)/Benefit	(36)	0	(36)	0
Net of Tax Income (Loss) [Abstract]
Foreign currency translation adjustments, Net of Tax Amount			58	261
Total pension and other post-retirement benefit plans, Net of Tax Amount	52	260	48	260
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period			285	34
Current-period other comprehensive (loss) income, net of taxes			58	261
Amounts reclassified from accumulated other comprehensive loss, net of taxes			1	(10)
Balance at end of period	344	285	344	285
Foreign Currency Translation Adjustment [Member]
Net of Tax Income (Loss) [Abstract]
Foreign currency translation adjustments, Net of Tax Amount			(189)	(93)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period			(6)	74
Current-period other comprehensive (loss) income, net of taxes			(189)	(93)
Amounts reclassified from accumulated other comprehensive loss, net of taxes			0	0
Balance at end of period	$ (195)	$ (19)	$ (195)	$ (19)