Investments (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013		Jun. 30, 2013	Dec. 31, 2012
Interest-bearing Assets
Cash and cash equivalents	$ 418		$ 477		$ 266	$ 291
Short-term investments	308		523
Fiduciary assets	4,032	[1]	3,778	[1]
Investments	138		132
Total interest-bearing assets	4,896		4,910
Investments:
Equity method investments	117		113
Other investments	13		10
Fixed-maturity securities	8		9
Investments	$ 138		$ 132

[1] Fiduciary assets include funds held on behalf of clients but does not include fiduciary receivables.