Derivative Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				3 Months Ended			3 Months Ended																			3 Months Ended	12 Months Ended	3 Months Ended		3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Jan. 31, 2012	Dec. 31, 2011	Mar. 31, 2012 Cash Flow Hedges	Apr. 02, 2011 Cash Flow Hedges	Dec. 31, 2011 Cash Flow Hedges	Mar. 31, 2012 Fair Value Hedges	Apr. 02, 2011 Fair Value Hedges	Mar. 31, 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	Mar. 31, 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	Mar. 31, 2012 Foreign Exchange Contracts Net Investment Hedging	Dec. 31, 2011 Foreign Exchange Contracts Net Investment Hedging	Mar. 31, 2012 Foreign Exchange Contracts Net Investment Hedging Currency, British Pound Sterling	Dec. 31, 2011 Foreign Exchange Contracts Net Investment Hedging Currency, British Pound Sterling	Mar. 31, 2012 Not Designated as Hedging Instrument Forward Contracts	Dec. 31, 2011 Not Designated as Hedging Instrument Forward Contracts	Mar. 31, 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	$ 30.3	$ 22.7
After-tax gain (loss) for cash flow hedge effectiveness in accumulated other comprehensive loss					(81.9)		(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					(6.7)
Gain (Loss) on hedged item in foreign currency cash flow hedge	(4.9)	5.2
Gain (loss) reclassified from accumulated other comprehensive loss into earnings					2.3	(4.2)
Notional amount of forward starting interest rate swaps			550.0	1,250.0						160.0	400.0	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	56.4
Foreign exchange contracts notional values																		153.5	196.8								928.7	925.4
Notional amount of forward currency contracts outstanding, de-designated																		23.2	19.8
Derivative instrument maturity year																		2013	2013	2013
Notional amount of contracts outstanding																				74.8	0								3,900.0	3,900.0	104.2	100.8
Termination of interest rate swaps	35.8							35.8
Deferred gain from termination of interest rate swaps			28.0
Net swap accruals and amortization of gains on terminated swaps								6.6	4.4
Interest expense on underlying debt								9.7	13.5
Gain (loss) included in accumulated other comprehensive income (loss)																									(52.5)	(32.7)
Derivative contracts maturity month and year																											2013-01	2012-10	2013-05		2014-12
Proceeds from net investment hedge settlements	1.9
Payments of net investment hedge settlements		$ 22.7