Earnings (Loss) Per Common Share (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		0 Months Ended	3 Months Ended	9 Months Ended		3 Months Ended			3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended	0 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011	Nov. 30, 2006 North America [Member] 0.875% Convertible Notes Due 2013 [Member]	Sep. 28, 2012 North America [Member] 0.875% Convertible Notes Due 2013 [Member]	Sep. 28, 2012 North America [Member] 0.875% Convertible Notes Due 2013 [Member]	Dec. 31, 2011 North America [Member] 0.875% Convertible Notes Due 2013 [Member]	Sep. 28, 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. 28, 2012 North America [Member] Subordinated Convertible Notes Due 2029 [Member]	Sep. 30, 2011 North America [Member] Subordinated Convertible Notes Due 2029 [Member]	Oct. 15, 2012 Subsequent Event [Member] North America [Member] 1.00% Senior Convertible Notes Due 2012 [Member]	Dec. 31, 2011 Common Stock [Member]	Sep. 28, 2012 Common Stock [Member]	Oct. 29, 2012 Common Stock [Member] Maximum [Member] Subsequent Event [Member]
Debt Instrument [Line Items]
Stock repurchase program, authorized amount																	$ 125
Stock repurchased during period, value															$ 62.5	$ 1.2
Stock repurchased during period, shares															2,500,000	50,000
Stock repurchased during period, average price per share															$ 24.72	$ 24.80
Interest rate					0.875%	0.875%	0.875%	0.875%	1.00%	1.00%	1.00%			1.00%
Weighted average conversion price per share						$ 50.36			$ 83.93			$ 36.75	$ 38.26
Strike price of warrants, per share					$ 76.00		$ 76.00
Average stock considered as issuable under the treasury	0	0	0	800,000