Goodwill and Other Intangible Assets (Other Intangible Assets Narrative) (Details) (USD $)	3 Months Ended		3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Finite-Lived Intangible Assets, Except Capitalized Internal-Use Software [Member]	Mar. 31, 2013 Finite-Lived Intangible Assets, Except Capitalized Internal-Use Software [Member]	Mar. 31, 2014 Capitalized Internal Use Software [Member]	Mar. 31, 2013 Capitalized Internal Use Software [Member]	Jun. 30, 2014 Capitalized Internal Use Software [Member] Scenario, Forecast [Member]	Mar. 31, 2014 Capitalized Internal Use Software, Except Significant System Conversions [Member]	Mar. 31, 2014 Minimum [Member] Capitalized Internal Use Software, Significant System Conversions [Member]	Mar. 31, 2014 Maximum [Member] Capitalized Internal Use Software, Significant System Conversions [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired during the year	$ 93,000,000
Finite-Lived Intangible Assets, Gross	64,000,000	51,000,000
Finite-Lived Intangible Assets, Net	33,000,000	21,000,000
Indefinite-Lived Intangible Assets (Excluding Goodwill)	130,000,000	50,000,000
Finite-Lived Intangible Assets, Weighted-Average Useful Life			6 years					3 years	8 years	10 years
Acquired Finite-lived Intangible Asset, Residual Value			0		0
Amortization expense			1,000,000	1,000,000	84,000,000	31,000,000	41,000,000
Amortization expense for remainder 2014			6,000,000		127,000,000
Amortization expense for 2015			8,000,000		144,000,000
Amortization expense for 2016			7,000,000		75,000,000
Amortization expense for 2017			3,000,000		45,000,000
Amortization expense for 2018			2,000,000		36,000,000
Amortization expense for 2019			2,000,000		27,000,000
Amortization expense thereafter			5,000,000		70,000,000
Capitalized Computer Software, Gross	1,100,000,000	988,000,000
Capitalized Computer Software, Net	565,000,000	560,000,000
Capitalized Computer Software, Development Stage Costs	150,000,000
Impairment of Long-Lived Assets Held-for-use	24,000,000
Amortization of software to be abandoned	$ 42,000,000