Long-Term Debt and Financing Arrangements (Detail) (USD $)	3 Months Ended		9 Months Ended					9 Months Ended			3 Months Ended																													3 Months Ended		9 Months Ended		1 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011	Dec. 31, 2011	Sep. 29, 2012 Notes payable due 2012	Dec. 31, 2011 Notes payable due 2012	Sep. 29, 2012 Convertible notes payable due in 2012	Sep. 29, 2012 Convertible notes payable due in 2012 decimal	Dec. 31, 2011 Convertible notes payable due in 2012	Sep. 29, 2012 Subordinated debentures 2052	Jul. 25, 2012 Subordinated debentures 2052	Sep. 29, 2012 Notes payable due 2013	Aug. 31, 2012 Notes payable due 2013	Dec. 31, 2011 Notes payable due 2013	Sep. 29, 2012 Notes payable due 2014	Aug. 31, 2012 Notes payable due 2014	Dec. 31, 2011 Notes payable due 2014	Sep. 29, 2012 Notes 8 Point 95 Percent Due 2014	Aug. 31, 2012 Notes 8 Point 95 Percent Due 2014	Dec. 31, 2011 Notes 8 Point 95 Percent Due 2014	Sep. 29, 2012 Notes payable due 2016	Dec. 31, 2011 Notes payable due 2016	Sep. 29, 2012 Convertible notes payable due in 2018 (junior subordinated)	Dec. 31, 2011 Convertible notes payable due in 2018 (junior subordinated)	Sep. 29, 2012 Notes payable due 2021	Dec. 31, 2011 Notes payable due 2021	Sep. 29, 2012 Notes payable due 2028	Dec. 31, 2011 Notes payable due 2028	Sep. 29, 2012 Notes payable due 2040	Dec. 31, 2011 Notes payable due 2040	Sep. 29, 2012 Notes 5 Point 75 Percent Due 2052 [Member]	Dec. 31, 2011 Notes 5 Point 75 Percent Due 2052 [Member]	Sep. 29, 2012 Other, payable in varying amounts through 2021	Dec. 31, 2011 Other, payable in varying amounts through 2021	Sep. 29, 2012 Other, payable in varying amounts through 2021 Minimum	Dec. 31, 2011 Other, payable in varying amounts through 2021 Minimum	Sep. 29, 2012 Other, payable in varying amounts through 2021 Maximum	Dec. 31, 2011 Other, payable in varying amounts through 2021 Maximum	Sep. 29, 2012 Number of stock warrants	Oct. 01, 2011 Number of stock warrants	Sep. 29, 2012 Number of stock warrants	Oct. 01, 2011 Number of stock warrants	Jul. 31, 2012 Old Credit Facility [Member]	Jul. 30, 2012 New Credit Facility [Member]	Sep. 29, 2012 BondHedge [Member]	Jan. 31, 2012 Fixed-to-Floating Interest Rate Swaps Terminated Notes payable due 2012	Sep. 29, 2012 Fixed-to-Floating Interest Rate Swaps Terminated Notes payable due 2016	Jan. 31, 2012 Fixed-to-Floating Interest Rate Swaps Terminated Notes payable due 2016	Sep. 29, 2012 Fixed to Floating Interest Rate Swap Notes payable due 2021	Jan. 31, 2012 Fixed to Floating Interest Rate Swap Notes payable due 2021	Dec. 31, 2011 Fixed to Floating Interest Rate Swap Notes payable due 2021	Sep. 29, 2012 Fixed to Floating Interest Rate Swap Notes payable due 2028	Jan. 31, 2012 Fixed to Floating Interest Rate Swap Notes payable due 2028
Debt Instrument [Line Items]
Long-term debt fair value adjustment																																																$ 17,000,000					$ 17,000,000
Commercial paper borrowings outstanding	1,308,400,000		1,308,400,000
Commercial paper borrowings capacity	2,000,000,000		2,000,000,000
Payments of debt issuance costs											20,600,000
Line of Credit Facility, Maximum Borrowing Capacity																																													1,000,000,000
Extinguishment of debt																																												750,000,000
Antidilutive securities excluded from the computation of EPS																																								3,704,000	4,939,000	4,445,000	4,939,000
Junior Subordinated Notes												750,000,000
Common Stock Price Per Share			$ 73.24
Stock Issued During Period, Shares, Conversion of Convertible Securities			640,018																																											640,772
Stated interest rate								3.50%	3.50%	3.50%		5.75%		6.15%			4.75%			8.95%
Debt instrument, face amount	320,000,000		320,000,000											250,000,000			300,000,000			350,000,000																											200,000,000		300,000,000	400,000,000	200,000,000	200,000,000		150,000,000
Proceeds from long-term debt	729,400,000	900,000	729,400,000	21,400,000							729,400,000
Long-term debt, interest rate						4.90%	4.90%						6.15%		6.15%	4.75%		4.75%	8.95%		8.95%	5.75%	5.75%	4.25%	4.25%	3.40%	3.40%	7.05%	7.05%	5.20%	5.20%					0.00%	0.00%	7.14%	7.14%
Long-term debt, including current maturities	2,937,500,000		2,937,500,000		3,452,200,000	200,400,000	204,200,000	0	0	316,100,000			0		259,200,000	0		312,700,000	0		388,700,000	328,600,000	330,500,000	632,500,000	632,500,000	419,000,000	402,900,000	171,800,000	167,500,000	399,700,000	399,700,000	750,000,000	0	35,500,000	38,200,000
Less: Current maturities of long-term debt	(208,600,000)		(208,600,000)		(526,400,000)
Long-term debt	$ 2,728,900,000		$ 2,728,900,000		$ 2,925,800,000
Debt Instrument, Convertible, Conversion Ratio								15.6666	1,000
Threshold percentage of principal plus accrued interest for redemption												100.00%