Share-Based Compensation Level 4 (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Exercised	0	0	143,000	0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield			1.90%
Expected volatility			35.20%
Risk-free interest rate			0.70%
Expected holding period			4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding at beginning of period			12,401,970
Options outstanding at beginning of period, weighted average exercise price			$ 8.84
Granted			2,041,330
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price			$ 15.26
Exercised			573,335
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price			$ 8.89
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period			36,397
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price			$ 10.31
Options outstanding at end of period	13,833,568		13,833,568
Options outstanding at end of period, weighted average exercise price	$ 9.78		$ 9.78
Options exercisable at March 31, 2012	9,719,085		9,719,085
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 8.50		$ 8.50
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Nonvested restricted shares at beginning of period			1,104,579
Nonvested restricted shares at beginning of period, weighted average grant date fair value			$ 9.78
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			378,280
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 15.26
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			(296,886)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value			$ 8.63
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			2,744
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price			$ 10.32
Nonvested restricted shares at end of period	1,183,229		1,183,229
Nonvested restricted shares at end of period, weighted average grant date fair value	$ 11.81		$ 11.81