Goodwill and Specifically Identifiable Intangible Assets (Finite And Indefinite Lived Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	$ 238	$ 224
Accumulated amortization	30	26
Sales Force [Member]
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	100	100
Accumulated amortization	27	23
Mutual Fund Contract Rights [Member]
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	5	2
Accumulated amortization	0	0
Fcc Licenses [Member]
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	129	118
Accumulated amortization	0	0
Other Intangible Assets [Member]
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	4	4
Accumulated amortization	$ 3	$ 3