Investments (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Interest-bearing Assets
Cash and cash equivalents	$ 477		$ 291		$ 272	$ 346
Short-term investments	523		346
Fiduciary assets	3,778	[1]	4,029	[1]
Investments	132		165
Total interest-bearing assets	4,910		4,831
Investments:
Equity method investments	113		102
Other investments, at cost	10	[2]	43	[2]
Fixed-maturity securities	9	[2]	20	[2]
Investments	$ 132		$ 165

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

[2] The reductions in other investments and fixed-maturity securities are primarily due to sales.