CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Millions	Total USD ($)	Common Stock [Member] USD ($)	Number of common shares outstanding [Member]	Additional Paid-in Capital [Member] USD ($)	Retained Earnings [Member] USD ($)	Accumulated Other Comprehensive Loss [Member] USD ($)	Noncontrolling Interest [Member] USD ($)	Redeemable Noncontrolling Interest [Member] USD ($)
Balance at Dec. 31, 2010	$ 1,138.3	$ 0.9		$ 541.9	$ 603.8	$ (8.4)	$ 0.1
Balance (in shares) at Dec. 31, 2010			86.4
Comprehensive (loss) income	30.3				50.7	(21.2)	0.8
Comprehensive income (loss) attributable to noncontrolling interests
Issuance of restricted stock to employees, net of forfeitures (in shares)			1.8
Amortization expense in connection with restricted stock	16.7			16.7
Distributions to noncontrolling interests	(0.7)						(0.7)
Tax effects from vesting of restricted stock	1.1			1.1
Tax effects of expired employee stock options and forfeited restricted stock	(1.4)			(1.4)
Dividends on common stock ($0.20 per share)	(17.0)				(17.0)
Repurchase of common shares (in shares)	(7.2)		(7.2)
Repurchase of common shares	(78.0)	(0.1)		(36.5)	(41.4)
Other	0.1				0.1
Balance at Dec. 31, 2011	1,089.4	0.8		521.8	596.2	(29.6)	0.2
Balance (in shares) at Dec. 31, 2011			81.0
Comprehensive (loss) income	(43.3)				(56.1)	11.7	1.1
Comprehensive income (loss) attributable to noncontrolling interests
Issuance of restricted stock to employees, net of forfeitures (in shares)			2.4
Shares withheld for taxes upon vesting of restricted stock (in shares)			0
Shares withheld for taxes upon vesting of restricted stock	(0.3)			(0.1)	(0.2)
Acquisition of Brian Atwood	0.6						0.6	0.6
Amortization expense in connection with restricted stock	19.7			19.7
Distributions to noncontrolling interests	(1.0)						(1.0)
Tax effects from vesting of restricted stock	1.7			1.7
Tax effects of expired employee stock options and forfeited restricted stock	(1.5)			(1.5)
Dividends on common stock ($0.20 per share)	(15.8)				(15.8)
Repurchase of common shares (in shares)	(4.2)		(4.2)
Repurchase of common shares	(44.0)	0		(20.8)	(23.2)
Other	0.2				0.2
Balance at Dec. 31, 2012	1,005.7	0.8		520.8	501.1	(17.9)	0.9	0.6
Balance (in shares) at Dec. 31, 2012			79.2
Comprehensive (loss) income	(7.4)				(19.8)	11.8	0.6
Comprehensive income (loss) attributable to noncontrolling interests								(0.5)
Issuance of restricted stock to employees, net of forfeitures (in shares)			1.9
Shares withheld for taxes upon vesting of restricted stock (in shares)			(0.2)
Shares withheld for taxes upon vesting of restricted stock	(2.7)			(1.4)	(1.3)
Amortization expense in connection with restricted stock	23.3			23.3
Distributions to noncontrolling interests	(1.1)						(1.1)
Tax effects from vesting of restricted stock	(0.3)			(0.3)
Tax effects of expired employee stock options and forfeited restricted stock	(4.0)			(4.0)
Dividends on common stock ($0.20 per share)	(15.6)				(15.6)
Repurchase of common shares (in shares)	(1.2)		(1.2)
Repurchase of common shares	(14.5)	0		(7.5)	(7.0)
Adjust redeemable noncontrolling interest to redemption value	(0.1)			(0.1)	0			0.1
Balance at Dec. 31, 2013	$ 983.3	$ 0.8		$ 530.8	$ 457.4	$ (6.1)	$ 0.4	$ 0.2
Balance (in shares) at Dec. 31, 2013			79.7