CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Common shares, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, shares authorized	1,250,000,000	1,250,000,000
Common shares, shares issued	319,297,647	316,816,851
Treasury shares	131,550,883	124,698,544
Consolidated Investment Entities
Receivables, fair value (in dollars)	$ 84	$ 32
Debt, fair value (in dollars)	5,511	4,804
Other liabilities, fair value (in dollars)	$ 457	$ 193