Equity Incentive Programs (Tables)

6 Months Ended

Jun. 30, 2013

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

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value of each stock option grant is estimated on the date of grant using the Black-Scholes-Merton option pricing model. The fair market value of the stock options is determined using the following weighted average assumptions:

	2012
Expected volatility	36.7	%
Risk-free interest rate	1.3	%
Expected life (years)	7.0
Dividend yield	7.1	%

Schedule of Share-based Compensation, Stock Options, Activity

The following table is a summary of the stock option activity for the six months endedJune 30, 2013:

	Shares Under Option		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (millions)
Outstanding at December 31, 2012	4,407,125		$	20.34	6.8	$	15.2
Granted	—		—
Exercised	(111,075	)	14.89
Cancelled/forfeited/expired	(90,173	)	28.12
Outstanding at June 30, 2013	4,205,877		$	20.47	6.4	$	23.9
Vested and expected to vest at June 30, 2013	4,195,511		$	20.49	6.4	$	23.8
Exercisable at June 30, 2013	2,501,653		$	20.01	6.1	$	13.7

Schedule of Share-based Compensation, Activity

The following table is a summary of the stock option exercises and vesting activity for the three and six months endedJune 30, 2013 and 2012:

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Total intrinsic value of stock options exercised	$	0.7	$	—	$	0.9	$	—
Cash received from stock option exercises	1.2		—		1.7		—
Total grant date fair value of stock options vested	—		—		1.8		—

Schedule of Nonvested Performance-based Units Activity

The following table is a summary of PS and PSU award activity for the six months endedJune 30, 2013:

	Performance Shares					Performance Share Units
	Shares		Weighted- Average Grant Date Fair Value Per Share		Weighted- Average Remaining Contractual Term (years)	Units	Weighted- Average Grant Date Fair Value Per Share		Weighted- Average Remaining Contractual Term (years)
Nonvested at December 31, 2012	—		$	—	—	—	$	—	—
Granted	389,930		20.39			16,208	20.50
Vested	—		—			—	—
Forfeited	(21,524	)	20.39			—	—
Nonvested at June 30, 2013	368,406		$	20.39	2.5	16,208	$	20.50	2.5

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

The following table is a summary of RS and RSU award activity for the six months endedJune 30, 2013:

	Restricted Stock					Restricted Stock Units
	Shares		Weighted- Average Grant Date Fair Value Per Share		Weighted- Average Remaining Contractual Term (years)	Units	Weighted- Average Grant Date Fair Value Per Share		Weighted- Average Remaining Contractual Term (years)
Nonvested at December 31, 2012	415,906		$	21.24	1.7	22,438	$	21.17	1.7
Granted	408,146		20.39			32,671	20.72
Vested	—		—			—	—
Forfeited	(49,812	)	20.74			—	—
Nonvested at June 30, 2013	774,240		$	20.87	1.9	55,109	$	20.90	2.0