Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-Based Compensation Expense

We recorded share-based compensation expense as follows:

	For the three months ended March 31,
	2016		2015
	(in millions)
Share-based compensation expense	$	4.4	$	4.1

Schedule of Stock Option Activity

The following table summarizes information related to our common stock options:

	Number of Stock Options		Weighted Average Exercise Price
Options outstanding as of January 1, 2016	5,375,476		$	16.04
Granted	—		$	—
Exercised	(14,405	)	$	14.90
Canceled or forfeited	(2,675	)	$	23.23
Options outstanding as of March 31, 2016	5,358,396		$	16.04
Options exercisable as of March 31, 2016	3,766,337		$	13.13
Expected to vest as of March 31, 2016	1,301,667		$	23.09

Schedule of Weighted Average Grant Date Fair Value

The following information is provided for our stock options:

	For the three months ended March 31,
	2016		2015
Weighted-average grant date fair value	$	—	$	9.44

Schedule of Restricted Stock Units Activity

The following table summarizes information related to our restricted stock units:

	Number of Units		Weighted Average Grant Date Fair Value
Non-vested as of January 1, 2016	1,311,423		$	25.16
Granted	4,105		$	31.68
Vested	(44,579	)	$	26.50
Canceled or forfeited	(4,443	)	$	28.74
Non-vested as of March 31, 2016	1,266,506		$	25.12

Schedule of Performance Stock Units Activity

The following table summarizes information related to our performance stock units:

	Number of Units	Weighted Average Grant Date Fair Value
Non-vested as of January 1, 2016	408,228	$	23.23
Granted	—	$	—
Canceled or forfeited	—	$	—
Non-vested as of March 31, 2016	408,228	$	23.23