Share-Based Compensation (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	761,000	0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	1.80%
Expected volatility	27.10%
Risk-free interest rate	1.10%
Expected holding period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding at beginning of period	13,319,750
Options outstanding at beginning of period, weighted average exercise price	$ 9.84
Granted	2,495,850
Granted, weighted average exercise price	$ 17.41
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	964,403
Exercised, weighted average exercise price	$ 8.82
Options outstanding at end of period	14,851,197
Options outstanding at end of period, weighted average exercise price	$ 11.18
Options exercisable at March 31, 2014	10,339,379
Options exercisable at March 31, 2014, weighted average exercise price	$ 9.14
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	1,183,229
Nonvested restricted shares at beginning of period, weighted average grant date fair value	$ 11.81
Granted	344,570
Granted, weighted average grant date fair value	$ 17.41
Vested	187,549
Vested, weighted average grant date fair value	$ 11.44
Nonvested restricted shares at end of period	1,340,250
Nonvested restricted shares at end of period, weighted average grant date fair value	$ 13.30