Long-Term Debt (Schedule of Convertible Debt Instruments Outstanding) (Details) (USD $)	6 Months Ended
	Jul. 01, 2011	Dec. 31, 2010	Dec. 15, 2009	Sep. 30, 2007
Parent Company [Member] | North America [Member] | 0.875% Convertible Note due 2013 [Member]
Face value	$ 355,000,000	$ 355,000,000
Debt discount	(50,200,000)	(59,500,000)
Parent Company [Member] | North America [Member] | Subordinated Convertible Notes due 2029 [Member]
Face value	429,500,000	429,500,000
Debt discount	(265,000,000)	(265,600,000)
Parent Company [Member] | North America [Member] | Senior Convertible Notes One Percent Due 2012 [Member]
Face value	10,600,000	10,600,000	10,600,000
Debt discount	(800,000)	(1,100,000)
4.50% Annual Interest Rate on Subordinated Convertible Notes Until November 2019 [Member]
Expiration date of stated annual interest rate	2019
Stated annual interest rate	4.50%
2.25% Annual Interest Rate on Subordinated Convertible Notes Until November 2029 [Member]
Maturity date	2029
Stated annual interest rate	2.25%
Subordinated Convertible Notes due 2029 [Member]
Book value	164,500,000	163,900,000
Fair value	599,400,000	521,000,000
Maturity date	November 2029
Interest payments	Semi-annually: May 15 & November 15
Senior Convertible Notes One Percent Due 2012 [Member]
Face value				475,000,000
Book value	9,800,000	9,500,000	389,700,000	348,200,000
Fair value	10,000,000	9,700,000
Maturity date	October 2012
Stated annual interest rate	1.00%		1.00%
Interest payments	Semi-annually: April 15 & October 15
0.875% Convertible Note due 2013 [Member]
Book value	304,800,000	295,500,000
Fair value	$ 382,500,000	$ 350,600,000
Maturity date	November 2013
Stated annual interest rate	0.875%
Interest payments	Semi-annually: May 15 & November 15