CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) (USD $) In Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interest [Member]	Redeemable Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2010	$ 0.9	$ 541.9	$ 603.8	$ (8.4)	$ 0.1	$ 0	$ 1,138.3
Balance (in shares) at Dec. 31, 2010	86.4
Comprehensive income, including amounts attributable to nonredeemable and redeemable noncontrolling interest	0	0	71.8	(13.4)	0.6	0	59.0
Issuance of restricted stock to employees, net of forfeitures (in shares)	1.7
Amortization of restricted stock	0	13.9	0	0	0	0	13.9
Distributions to noncontrolling interest	0	0	0	0	(0.5)	0	(0.5)
Tax effects from vesting of restricted stock	0	1.0	0	0	0	0	1.0
Tax effects of expired employee stock options	0	(1.2)	0	0	0	0	(1.2)
Repurchase of common shares	(0.1)	(36.5)	(41.4)	0	0	0	(78.0)
Repurchase of common shares (in shares)	(7.2)
Dividends on common stock ($0.15 per share)	0	0	(13.0)	0	0	0	(13.0)
Other	0	0	0.2	0	0	0	0.2
Balance at Oct. 01, 2011	0.8	519.1	621.4	(21.8)	0.2	0	1,119.7
Balance (in shares) at Oct. 01, 2011	80.9
Balance at Dec. 31, 2011	0.8	521.8	596.2	(29.6)	0.2	0	1,089.4
Balance (in shares) at Dec. 31, 2011	81.0
Comprehensive income, including amounts attributable to nonredeemable and redeemable noncontrolling interest	0	0	24.3	12.7	0.9	0	37.9
Acquisition of Brian Atwood intellectual property	0	0	0	0	0.6	0.6	0.6
Issuance of restricted stock to employees, net of forfeitures (in shares)	2.2
Amortization of restricted stock	0	16.4	0	0	0	0	16.4
Distributions to noncontrolling interest	0	0	0	0	(0.7)	0	(0.7)
Tax effects from vesting of restricted stock	0	1.6	0	0	0	0	1.6
Tax effects of expired employee stock options	0	(1.5)	0	0	0	0	(1.5)
Repurchase of common shares	0	(16.1)	(18.1)	0	0	0	(34.2)
Repurchase of common shares (in shares)	(3.4)
Dividends on common stock ($0.15 per share)	0	0	(12.1)	0	0	0	(12.1)
Other	0	0	0.2	0	0	0	0.2
Balance at Sep. 29, 2012	$ 0.8	$ 522.2	$ 590.5	$ (16.9)	$ 1.0	$ 0.6	$ 1,097.6
Balance (in shares) at Sep. 29, 2012	79.8