Defined Benefit Pension Plan Accounting Policy Change Impact on Consolidated Balance Sheets (Details) (USD $) In Millions, unless otherwise specified	Oct. 03, 2014	Mar. 28, 2014	Sep. 27, 2013	Mar. 29, 2013
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Earnings retained for use in business	$ 1,453	$ 1,592
Accumulated other comprehensive income	181	279	15	108
Noncontrolling interest in subsidiaries	32	32
Previous accounting methods
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Earnings retained for use in business	2,611
Accumulated other comprehensive income	(976)
Noncontrolling interest in subsidiaries	31
Previous accounting methods | As previously reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Earnings retained for use in business		2,770
Accumulated other comprehensive income		(898)
Noncontrolling interest in subsidiaries		31
Impact of change in accounting methods
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Earnings retained for use in business	(1,158)	(1,178)
Accumulated other comprehensive (loss) income	1,157	1,177
Noncontrolling interest in subsidiaries	$ 1	$ 1