Long-Term Debt (Schedule Of Convertible Debt Instruments Outstanding) (Details) (USD $) In Millions, unless otherwise specified			6 Months Ended	12 Months Ended		6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended			6 Months Ended	12 Months Ended
	Jun. 29, 2012	Dec. 31, 2011	Jun. 29, 2012 North America [Member] Subordinated Convertible Notes Due 2029 [Member]	Dec. 31, 2011 North America [Member] Subordinated Convertible Notes Due 2029 [Member]	Dec. 15, 2009 North America [Member] Subordinated Convertible Notes Due 2029 [Member]	Jun. 29, 2012 North America [Member] 4.50% Annual Interest Rate On Subordinated Convertible Notes Until November 2019 [Member]	Dec. 31, 2011 North America [Member] 4.50% Annual Interest Rate On Subordinated Convertible Notes Until November 2019 [Member]	Jun. 29, 2012 North America [Member] 2.25% Annual Interest Rate On Subordinated Convertible Notes Until November 2029 [Member]	Dec. 31, 2011 North America [Member] 2.25% Annual Interest Rate On Subordinated Convertible Notes Until November 2029 [Member]	Jun. 29, 2012 North America [Member] 1.00% Senior Convertible Notes Due 2012 [Member]	Dec. 31, 2011 North America [Member] 1.00% Senior Convertible Notes Due 2012 [Member]	Dec. 15, 2009 North America [Member] 1.00% Senior Convertible Notes Due 2012 [Member]	Sep. 30, 2007 North America [Member] 1.00% Senior Convertible Notes Due 2012 [Member]	Jun. 29, 2012 North America [Member] 0.875% Convertible Notes Due 2013 [Member]	Dec. 31, 2011 North America [Member] 0.875% Convertible Notes Due 2013 [Member]	Nov. 30, 2006 North America [Member] 0.875% Convertible Notes Due 2013 [Member]
Face value	$ 1,146.9	$ 1,048.9	$ 429.5	$ 429.5						$ 10.6	$ 10.6			$ 355.0	$ 355.0
Debt discount			(263.7)	(264.4)	(266.6)					(0.2)	(0.5)	(74.7)	(126.8)	(30.7)	(40.6)	(124.1)
Book value			165.8	165.1	162.9					10.4	10.1	389.7	348.2	324.3	314.4	230.9
Fair value			$ 422.8	$ 412.3						$ 10.6	$ 9.8			$ 339.7	$ 329.7
Maturity date			November 2029	November 2029		November 2019	November 2019	November 2029	November 2029	October 2012	October 2012			November 2013	November 2013
Interest rate						4.50%	4.50%	2.25%	2.25%	1.00%	1.00%	1.00%		0.875%	0.875%	0.875%
Interest payments			Semi-annually: May 15 & Nov 15	Semi-annually: May 15 & Nov 15						Semi-annually: Apr 15 & Oct 15	Semi-annually: Apr 15 & Oct 15			Semi-annually: May 15 & Nov 15	Semi-annually: May 15 & Nov 15