Share-Based Incentive Compensation Plans - Awards Outstanding (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Granted	$ 30.03
2013 Omnibus Plan | Restricted Stock Units (RSUs)
Number of Awards
Outstanding, beginning balance	1,600,000
Granted	1,800,000
Vested	(100,000)
Forfeited	(100,000)
Outstanding, ending balance	3,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding, beginning balance	$ 19.15
Granted	$ 37.02
Vested	$ 20.47
Forfeited	$ 28.99
Outstanding, ending balance	$ 28.75
2013 Omnibus Plan | RSUs - Deal incentive awards
Number of Awards
Outstanding, beginning balance	800,000
Granted	100,000	[1]
Vested	(900,000)	[1]
Forfeited	0	[1]
Outstanding, ending balance	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding, beginning balance	$ 19.50
Granted	$ 30.03	[1]
Vested	$ 20.63	[1]
Forfeited	$ 0.00	[1]
Outstanding, ending balance	$ 0.00	[1]
2013 Omnibus Plan | Performance shares (PSU awards)
Number of Awards
Outstanding, beginning balance	500,000
Adjustment for PSU performance factor	300,000
Granted	700,000
Vested	(800,000)
Forfeited	(100,000)
Outstanding, ending balance	600,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding, beginning balance	$ 28.06
Adjustment for PSU performance factor	$ 28.06
Granted	$ 36.98
Vested	$ 28.15
Forfeited	$ 35.13
Outstanding, ending balance	$ 37.01
Non-Employee Directors | 2013 Non-Employee Director Incentive Plan | Restricted Stock Units (RSUs)
Number of Awards
Granted	12,888

[1] 1) Excludes 123,269 of RSUs - Deal Incentive Awards granted in 2013 that proportionally vest upon sales of Company stock by ING Group.