Earnings Per Common Share (Reconciliation Of The Numerator And Denominator Of Earnings (Loss) Per Common Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2011		Sep. 30, 2011		Jul. 01, 2011		Apr. 01, 2011		Dec. 31, 2010		Oct. 01, 2010		Jul. 02, 2010		Apr. 02, 2010		Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Earnings Per Share [Abstract]
Net income for basic EPS computation	$ (3.2)	[1]	$ (8.4)	[2]	$ 34.6	[3]	$ 31.5	[4]	$ 31.2	[1]	$ 15.4	[5]	$ 20.6	[6]	$ (11.0)	[7]	$ 54.5	[8],[9]	$ 56.2	[8],[9]	$ 37.1	[8],[9]
Weighted average shares outstanding for basic EPS computation																	51.9	[10],[11],[8]	52.1	[10],[11],[8]	52.0	[10],[11],[8]
Earnings per common share - basic	$ (0.06)	[1]	$ (0.16)	[2]	$ 0.66	[3]	$ 0.60	[4]	$ 0.60	[1]	$ 0.30	[5]	$ 0.40	[6]	$ (0.21)	[7]	$ 1.05	[10],[8]	$ 1.08	[10],[8]	$ 0.71	[10],[8]
Net income attributable to Company common shareholders	(3.2)	[1]	(8.4)	[2]	34.6	[3]	31.5	[4]	31.2	[1]	15.4	[5]	20.6	[6]	(11.0)	[7]	54.5	[8],[9]	56.2	[8],[9]	37.1	[8],[9]
Add: preferred stock dividends, if applicable																	0.3	[8]	0.3	[8]	0.3	[8]
Net income attributable to Company common shareholders — for diluted EPS computation	$ (3.2)	[1]	$ (8.3)	[2]	$ 34.7	[3]	$ 31.6	[4]	$ 31.2	[1]	$ 15.5	[5]	$ 20.7	[6]	$ (10.9)	[7]	$ 54.8	[9]	$ 56.5	[9]	$ 37.4	[9]
Weighted average shares outstanding including nonvested shares																	51.9	[10],[11],[8]	52.1	[10],[11],[8]	52.0	[10],[11],[8]
Dilutive effect of convertible notes																	0.6		0		0
Dilutive effect of stock options and restricted stock units																	0.8		0.6		0.4
Dilutive effect of assumed conversion of preferred stock																	0.4		0.4		0.4
Weighted average shares outstanding for diluted EPS computation																	53.7	[11],[8]	53.1	[11],[8]	52.8	[11],[8]
Earnings per common share - assuming dilution	$ (0.06)	[1]	$ (0.16)	[2]	$ 0.63	[3]	$ 0.58	[4]	$ 0.59	[1]	$ 0.29	[5]	$ 0.39	[6]	$ (0.21)	[7]	$ 1.02	[8]	$ 1.06	[8]	$ 0.71	[8]

[1] In the above table, the “As Originally Filed” rows correspond to Note 20 - Quarterly Operating Results (Unaudited) as stated in the Form 10-K for the fiscal year ended December 31, 2011 filed by the Company on February 23, 2012. The “Restatement #1” rows correspond to Note 20 - Quarterly Operating Results (Unaudited) as stated in the Form 10-K/A for the fiscal year ended December 31, 2011 filed by the Company on March 1, 2013.

[2] In the above table, the “As Originally Filed” rows correspond to Form 10-Q for the fiscal quarter ended September 30, 2011 filed by the Company on November 3, 2011. The “Restatement #1” rows correspond to Form 10-Q/A for the fiscal quarter ended September 28, 2012 filed by the Company on March 1, 2013.

[3] In the above table, the “As Originally Filed” rows correspond to Form 10-Q for the fiscal quarter ended July 1, 2011 filed by the Company on August 4, 2011. The “Restatement #1” rows correspond to Form 10-Q/A for the fiscal quarter ended June 29, 2012 filed by the Company on March 1, 2013.

[4] In the above table, the “As Originally Filed” rows correspond to Form 10-Q for the fiscal quarter ended April 1, 2011 filed by the Company on May 6, 2011. The “Restatement #1” rows correspond to Form 10-Q/A for the fiscal quarter ended March 30, 2012 filed by the Company on March 1, 2013.

[5] In the above table, the “As Originally Filed” rows correspond to Form 10-Q for the fiscal quarter ended October 1, 2010 filed by the Company on November 5, 2010. The “Restatement #1” rows correspond to Note 20 - Quarterly Operating Results (Unaudited) as stated in the Form 10-K/A for the fiscal year ended December 31, 2011 filed by the Company on March 1, 2013.

[6] In the above table, the “As Originally Filed” rows correspond to Form 10-Q for the fiscal quarter ended July 2, 2010 filed by the Company on August 6, 2010. The “Restatement #1” rows correspond to Note 20 - Quarterly Operating Results (Unaudited) as stated in the Form 10-K/A for the fiscal year ended December 31, 2011 filed by the Company on March 1, 2013.

[7] In the above table, the “As Originally Filed” rows correspond to Form 10-Q for the fiscal quarter ended April 2, 2010 filed by the Company on May 12, 2010. The “Restatement #1” rows correspond to Note 20 - Quarterly Operating Results (Unaudited) as stated in the Form 10-K/A for the fiscal year ended December 31, 2011 filed by the Company on March 1, 2013.

[8] See Note 22 - Restatement of Consolidated Financial Statements

[9] Numerator

[10] Under the two class method, Earnings per share — basic reflects undistributed earnings per share for both common stock and unvested share-based payment awards (restricted stock).

[11] Denominator