Interest Rate Swap Arrangements (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Notional Amount Of Derivatives	$ 6,620.0		$ 6,620.0		$ 3,740.0
Change in fair value of cash flow hedges, net of tax	31.0	$ 0.0	23.0	$ 0.0
Senior Notes 1.30% Due 2017 [Member] | Interest Rate Swaps [Member]
Debt Instrument [Line Items]
Notional Amount Of Derivatives	$ 900.0		$ 900.0
Interest Rate Swap, Spread above One-month LIBOR	0.6616%		0.6616%
Interest Rate Swap, Variable Rate at Period End	0.8456%		0.8456%
Fixed Interest Rate	1.30%		1.30%
Senior Notes 4.70% Due 2020 [Member] | Interest Rate Swaps [Member]
Debt Instrument [Line Items]
Notional Amount Of Derivatives	$ 300.0		$ 300.0
Interest Rate Swap, Spread above One-month LIBOR	3.156%		3.156%
Interest Rate Swap, Variable Rate at Period End	3.34%		3.34%
Fixed Interest Rate	4.70%		4.70%
Senior Notes 4.50% Due 2021 [Member] | Interest Rate Swaps [Member]
Debt Instrument [Line Items]
Notional Amount Of Derivatives	$ 1,000.0		$ 1,000.0
Interest Rate Swap, Spread above One-month LIBOR	2.868%		2.868%
Interest Rate Swap, Variable Rate at Period End	3.052%		3.052%
Fixed Interest Rate	4.50%		4.50%
Senior Notes 3.60% Due 2021 [Member] | Interest Rate Swaps [Member]
Debt Instrument [Line Items]
Notional Amount Of Derivatives	$ 1,100.0		$ 1,100.0
Interest Rate Swap, Spread above One-month LIBOR	1.937%		1.937%
Interest Rate Swap, Variable Rate at Period End	2.1225%		2.1225%
Fixed Interest Rate	3.60%		3.60%