Other Income (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended		1 Months Ended	3 Months Ended	32 Months Ended	1 Months Ended	3 Months Ended	8 Months Ended	12 Months Ended
	Sep. 26, 2014	Sep. 27, 2013	Sep. 26, 2014	Sep. 27, 2013	Feb. 28, 2013 Apex [Member]	Mar. 29, 2013 Apex [Member]	Feb. 28, 2013 Apex [Member]	Aug. 31, 2014 EVS/hybrid	Sep. 26, 2014 EVS/hybrid	Aug. 31, 2014 EVS/hybrid	Dec. 31, 2013 EVS/hybrid	Dec. 31, 2012 EVS/hybrid
Proceeds from sale and maturity of marketable securities	$ 6,000,000		$ 31,000,000
Marketable securities, realized gain (loss)	4,000,000		24,000,000
Marketable securities, after-tax realized gain (loss)	3,000,000		15,000,000
Marketable securities, realized gain, per diluted share			$ 0.02
Proceeds from divestiture of a business			86,700,000	0				87,000,000
Sales	4,870,300,000	4,669,100,000	14,496,600,000	13,851,300,000						60,000,000	100,000,000	100,000,000
Pre-tax gain on divestiture of a business			33,900,000	0					34,000,000
Disposal group, not discontinued operation, gain (loss) on disposal, net of tax									26,000,000
After-tax gain on sale upon closing of transaction, per diluted share									$ 0.04
Equity method investment, ownership percentage							50.00%
Proceeds from sale of unconsolidated joint venture					1,600,000,000
Total fair value of consideration received					797,000,000
Cash from sale of unconsolidated joint venture					759,000,000		759,000,000
Dividends received related to earnings of unconsolidated joint venture			0	66,600,000	67,000,000
Note receivable from sale of unconsolidated joint venture					38,000,000		38,000,000
Pre-tax gain on sale of unconsolidated joint venture						230,000,000
Equity method investment, after-tax realized gain (loss) on disposal						$ 144,000,000
Equity method investment realized gain on disposal per diluted share						$ 0.20