Variable Interest Entities (Asset & Liability Balances) (Details) - Consolidated investment entities [Member] - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Assets
Other assets	$ 2,129	$ 1,936
Liabilities
Debt	6,976	6,030
Other liabilities	529	193
Recurring basis [Member] \| Level 1 [Member]
Assets
Investments	127	134
Total assets at fair value	127	134
Recurring basis [Member] \| Level 1 [Member] \| Common stocks [Member]
Assets
Investments	123	130
Recurring basis [Member] \| Level 1 [Member] \| Other investments [Member]
Assets
Investments	4	4
Recurring basis [Member] \| Level 2 [Member]
Assets
Investments	6,390	5,523
Receivables	65	49
Other assets		1
Total assets at fair value	6,455	5,573
Liabilities
Other liabilities	529	193
Total liabilities at fair value	529	193
Recurring basis [Member] \| Level 2 [Member] \| Corporate debt securities [Member]
Assets
Investments	199	171
Recurring basis [Member] \| Level 2 [Member] \| Common stocks [Member]
Assets
Investments	43	40
Recurring basis [Member] \| Level 2 [Member] \| Other investments [Member]
Assets
Investments	25	25
Recurring basis [Member] \| Level 2 [Member] \| Syndicated loans [Member]
Assets
Investments	6,123	5,287
Recurring basis [Member] \| Level 3 [Member]
Assets
Investments	460	491
Other assets	2,129	1,935
Total assets at fair value	2,589	2,426
Liabilities
Debt	6,976	6,030
Total liabilities at fair value	6,976	6,030
Recurring basis [Member] \| Level 3 [Member] \| Common stocks [Member]
Assets
Investments	6	7
Recurring basis [Member] \| Level 3 [Member] \| Syndicated loans [Member]
Assets
Investments	454	484
Recurring basis [Member] \| Total [Member]
Assets
Investments	6,977	6,148
Receivables	65	49
Other assets	2,129	1,936
Total assets at fair value	9,171	8,133
Liabilities
Debt	6,976	6,030
Other liabilities	529	193
Total liabilities at fair value	7,505	6,223
Recurring basis [Member] \| Total [Member] \| Corporate debt securities [Member]
Assets
Investments	199	171
Recurring basis [Member] \| Total [Member] \| Common stocks [Member]
Assets
Investments	172	177
Recurring basis [Member] \| Total [Member] \| Other investments [Member]
Assets
Investments	29	29
Recurring basis [Member] \| Total [Member] \| Syndicated loans [Member]
Assets
Investments	$ 6,577	$ 5,771

Fair value portion of amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties.

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-Publisher FASB

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