Restructuring Charges (Company Recorded Restructuring Charges) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
January 1 Balance	$ 40	$ 28	$ 3
Charges to earnings	50	75	76
Cash paid	(54)	(59)	(29)
Other adjustments	(16)	(4)	(22)
December 31 Balance	20	40	28
Agent Conversions
January 1 Balance	5	9
Charges to earnings	3	3	6
Cash paid	(6)	(7)
Other adjustments			3
December 31 Balance	2	5	9
Severance and Related Costs
January 1 Balance	20	10	1
Charges to earnings	22	40	38
Cash paid	(30)	(32)	(29)
Other adjustments	(2)	2
December 31 Balance	10	20	10
Contractual Obligations and Other
January 1 Balance	15	9	2
Charges to earnings	25	32	32
Cash paid	(18)	(20)
Other adjustments	(14)	(6)	(25)
December 31 Balance	$ 8	$ 15	$ 9