Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

The Company recognized the following amounts of stock-based compensation expense by award type in the periods indicated (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
Award type:	2012		2011		2012		2011
Stock appreciation rights (SARs)	$	2.4	$	1.0	$	5.0	$	3.4
Common stock equivalents (CSEs)		0.1		0.1		0.4		0.4
Restricted stock units (RSUs)		6.7		6.7		22.6		21.0
Total expense (1)	$	9.2	$	7.8	$	28.0	$	24.8

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Stock-based compensation expense was recognized in the Condensed Consolidated Statements of Operations as follows (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
Amount recorded in:	2012		2011		2012		2011
Cost of services and product development	$	3.5	$	3.3	$	12.0	$	11.3
Selling, general and administrative		5.7		4.5		16.0		13.5
Total expense (1)	$	9.2	$	7.8	$	28.0	$	24.8

Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity [Table Text Block]

The fair value of the SARs was estimated on the date of grant using the Black-Scholes-Merton valuation model with the following weighted-average assumptions:

	Nine Months Ended September 30, (1)
	2012			2011
Expected dividend yield (2)		0	%		0	%
Expected stock price volatility (3)		40	%		38	%
Risk-free interest rate (4)		0.8	%		2.2	%
Expected life in years (5)		4.6			4.8

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

The following table summarizes the changes in stock options outstanding during the nine months ended September 30, 2012:

	Options in millions			Per Share Weighted- Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value (in millions)
Vested and outstanding at December 31, 2011		1.2		$	10.93		1.47 years	$	27.7
Exercised (1)		(0.8	)		10.80		n/a		n/a
Vested and outstanding at September 30, 2012		0.4		$	11.13		1.30 years	$	15.6
n/a=not applicable

Stock Appreciation Rights (SARs) [Member]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

The following table summarizes changes in SARs outstanding during the nine months ended September 30, 2012:

	SARs (in millions)			Per Share Weighted- Average Exercise Price		Per Share Weighted- Average Grant Date Fair Value		Weighted Average Remaining Contractual Term
Outstanding at December 31, 2011		2.5		$	20.39	$	7.66		4.00 years
Granted		0.4			37.81		12.99		6.36 years
Forfeited		—			—		—		n/a
Exercised		(0.8	)		18.60		6.86		n/a
Outstanding at September 30, 2012 (1), (2)		2.1		$	24.27	$	8.94		4.23 years
Vested and exercisable at September 30, 2012 (2)		0.9		$	18.50	$	7.08		3.17 years

Restricted Stock Units (RSUs) [Member]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

The following table summarizes the changes in RSUs outstanding during the nine months ended September 30, 2012:

	Restricted Stock Units (RSUs) (in millions)			Per Share Weighted Average Grant Date Fair Value
Outstanding at December 31, 2011		3.1		$	21.53
Granted (1)		0.7			37.97
Vested and released		(1.3	)		19.51
Forfeited		—			—
Outstanding at September 30, 2012 (2), (3)		2.5		$	27.93

Common Stock Equivalents [Member]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

The following table summarizes the changes in CSEs outstanding during the nine months ended September 30, 2012:

	Common Stock Equivalents (CSEs)			Per Share Weighted Average Grant Date Fair Value
Outstanding at December 31, 2011		97,268		$	15.93
Granted		8,631			44.63
Converted to common shares		(6,173	)		44.60
Outstanding at September 30, 2012		99,726		$	16.64