Derivative Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended				3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011	Jan. 31, 2012	Dec. 31, 2011	Jun. 30, 2012 Cash Flow Hedges	Jul. 02, 2011 Cash Flow Hedges	Jun. 30, 2012 Cash Flow Hedges	Jul. 02, 2011 Cash Flow Hedges	Dec. 31, 2011 Cash Flow Hedges	Jun. 30, 2012 Fair Value Hedges	Jul. 02, 2011 Fair Value Hedges	Jun. 30, 2012 Fair Value Hedges	Jul. 02, 2011 Fair Value Hedges	Jun. 30, 2012 Interest Rate Swap Cash Flow Hedges	Dec. 31, 2011 Interest Rate Swap Cash Flow Hedges	Dec. 31, 2009 Interest Rate Contracts Cash Flow Hedges	Jan. 31, 2012 Fixed-to-Floating Interest Rate Swaps Terminated Cash Flow Hedges	Jan. 31, 2012 Fixed-to-Floating Interest Rate Swaps Terminated Fair Value Hedges Notes payable due 2014	Jan. 31, 2012 Fixed-to-Floating Interest Rate Swaps Terminated Fair Value Hedges Notes payable due 2016	Jan. 31, 2012 Fixed-to-Floating Interest Rate Swaps Terminated Fair Value Hedges Notes payable due 2012	Jan. 31, 2012 Fixed-to-Floating Interest Rate Swaps Terminated Fair Value Hedges Notes payable due 2013	Jun. 30, 2012 Foreign Exchange Forward Cash Flow Hedges	Dec. 31, 2011 Foreign Exchange Forward Cash Flow Hedges	Jan. 31, 2012 Foreign Exchange Option Cash Flow Hedges	Dec. 31, 2011 Foreign Exchange Option Cash Flow Hedges	Jan. 31, 2012 Interest Rate Risk Fair Value Hedges Notes payable due 2028	Jan. 31, 2012 Interest Rate Risk Fair Value Hedges Senior Notes Due 2021	Dec. 31, 2011 Interest Rate Risk Fair Value Hedges Senior Notes Due 2021	Jun. 30, 2012 Foreign Exchange Contracts Net Investment Hedging	Dec. 31, 2011 Foreign Exchange Contracts Net Investment Hedging	Jun. 30, 2012 Foreign Exchange Contracts Net Investment Hedging Currency, British Pound Sterling	Dec. 31, 2011 Foreign Exchange Contracts Net Investment Hedging Currency, British Pound Sterling	Jun. 30, 2012 Not Designated as Hedging Instrument Forward Contracts	Dec. 31, 2011 Not Designated as Hedging Instrument Forward Contracts	Jun. 30, 2012 Not Designated as Hedging Instrument Currency Swaps	Dec. 31, 2011 Not Designated as Hedging Instrument Currency Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Significant cash flows related to derivatives, net cash paid			$ (0.7)	$ 82.1
After-tax gain (loss) for cash flow hedge effectiveness in accumulated other comprehensive loss							(75.1)		(75.1)		(75.9)
Cash flow gain (loss) hedge loss expected to be reclassified to earnings as hedged transactions occur or as amounts are amortized within the next 12 months									(2.5)
Gain (Loss) on hedged item in foreign currency cash flow hedge	(0.2)	(5.1)	(1.0)	(10.3)
Gain (loss) reclassified from accumulated other comprehensive loss into earnings							0.6	4.1	0.8	8.3
Notional amount of forward starting interest rate swaps	550.0		550.0			1,250.0										160.0	400.0		240.0	300.0	300.0	200.0	250.0					150.0	200.0	200.0
Interest rate swaps, applicable fixed interest rate																		4.7835%
Terminations of forward starting interest rate swap	0	0	56.4	0
Foreign exchange contracts notional values																								267.5	196.8								956.1	925.4
Notional amount of forward currency contracts outstanding, de-designated																								5.0	19.8
Derivative instrument maturity year																								2013	2013	2013
Notional amount of contracts outstanding																										70.0	0								4,900.0	3,900.0	101.3	100.8
Termination of interest rate swaps	0	0	35.8	0										35.8
Deferred gain from termination of interest rate swaps					28.0
Net swap accruals and amortization of gains on terminated swaps												6.6	5.0	13.2	9.4
Interest expense on underlying debt												6.1	14.1	15.8	27.6
Gain (loss) included in accumulated other comprehensive income (loss)																															(37.1)	(32.7)
Proceeds from net investment hedge settlements			7.0
Payments of net investment hedge settlements				$ 29.2