Investigations and Out of Period Adjustments (Other Adjustments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 28, 2014	Dec. 27, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 28, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 28, 2014	Mar. 29, 2013
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Cumulative Quantifying Misstatement Effect of Correction Tax	$ 0	$ 0	$ (4)	$ 14	$ (7)	$ (4)	$ (2)	$ (2)	$ 10	$ (15)
Cumulative effect of correction on net income (loss), net of tax	(6)	(8)	37	(5)	14	(33)	(2)	(1)	18	(22)
Other Operations [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Cumulative effect on income (loss) from continuing opertaions, pre tax	(1)	(12)	32	(21)	7	0	0	3	(2)	10
Cumulative effect of correction on net income (loss), net of tax	(8)	5	9	2	(12)	(1)	0	(2)	8	(15)
Continuing Operations [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Cumulative effect on income (loss) from continuing opertaions, pre tax	(1)	(12)	32	(21)	7	0	0	3	(2)	10
Discontinued Operations [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Cumulative effect of correction on net income (loss), net of tax	$ 3	$ (1)	$ 0	$ 0	$ 26	$ (28)	$ 0	$ 0	$ 2	$ (2)