Variable Interest Entities (Asset & Liability Balances) (Details) - USD ($) $ in Millions		Mar. 31, 2016		Dec. 31, 2015
Consolidated investment entities [Member]
Assets and liabilities measured at fair value
CLO debt valued using DCF model		$ 2,672
Assets
Other assets		0		$ 2,065
Liabilities
Debt		2,673	[1]	6,630
Other liabilities		29		221
Investment in non-consolidated CLOs [Member] | Variable Interest Entity, Not Primary Beneficiary [Member]
Assets and liabilities measured at fair value
Carrying value of nonconsolidated VIEs		11
Property Funds [Member] | Variable Interest Entity, Not Primary Beneficiary [Member]
Assets and liabilities measured at fair value
Carrying value of nonconsolidated VIEs		32
Sponsored hedge funds and private equity funds [Member] | Variable Interest Entity, Not Primary Beneficiary [Member]
Assets and liabilities measured at fair value
Carrying value of nonconsolidated VIEs		24		29
International Series Fund [Member] | Variable Interest Entity, Not Primary Beneficiary [Member]
Assets and liabilities measured at fair value
Carrying value of nonconsolidated VIEs		38
Affordable housing partnerships [Member] | Variable Interest Entity, Not Primary Beneficiary [Member]
Assets and liabilities measured at fair value
Carrying value of nonconsolidated VIEs		517		517
Recurring basis [Member] | Level 1 [Member] | Consolidated investment entities [Member]
Assets
Investments		5		78
Total assets at fair value		5		78
Recurring basis [Member] | Level 1 [Member] | Common stocks [Member] | Consolidated investment entities [Member]
Assets
Investments		1		74
Recurring basis [Member] | Level 1 [Member] | Other investments [Member] | Consolidated investment entities [Member]
Assets
Investments		4		4
Recurring basis [Member] | Level 2 [Member] | Consolidated investment entities [Member]
Assets
Investments		2,204		5,960
Receivables		63		70
Total assets at fair value		2,267		6,030
Liabilities
Debt	[2]	2,673
Other liabilities		29		221
Total liabilities at fair value		2,702		221
Recurring basis [Member] | Level 2 [Member] | Corporate debt securities [Member] | Consolidated investment entities [Member]
Assets
Investments		59		154
Recurring basis [Member] | Level 2 [Member] | Common stocks [Member] | Consolidated investment entities [Member]
Assets
Investments		12		46
Recurring basis [Member] | Level 2 [Member] | Other investments [Member] | Consolidated investment entities [Member]
Assets
Investments		4		22
Recurring basis [Member] | Level 2 [Member] | Syndicated loans [Member] | Consolidated investment entities [Member]
Assets
Investments		2,129		5,738
Recurring basis [Member] | Level 3 [Member] | Consolidated investment entities [Member]
Assets
Investments		302		532
Other assets				2,065
Total assets at fair value		302		2,597
Liabilities
Debt				6,630
Total liabilities at fair value				6,630
Recurring basis [Member] | Level 3 [Member] | Common stocks [Member] | Consolidated investment entities [Member]
Assets
Investments		2		3
Recurring basis [Member] | Level 3 [Member] | Syndicated loans [Member] | Consolidated investment entities [Member]
Assets
Investments		300		529
Recurring basis [Member] | Total [Member] | Consolidated investment entities [Member]
Assets
Investments		2,511		6,570
Receivables		63		70
Other assets				2,065
Total assets at fair value		2,574		8,705
Liabilities
Debt		2,673	[2]	6,630
Other liabilities		29		221
Total liabilities at fair value		2,702		6,851
Recurring basis [Member] | Total [Member] | Corporate debt securities [Member] | Consolidated investment entities [Member]
Assets
Investments		59		154
Recurring basis [Member] | Total [Member] | Common stocks [Member] | Consolidated investment entities [Member]
Assets
Investments		15		123
Recurring basis [Member] | Total [Member] | Other investments [Member] | Consolidated investment entities [Member]
Assets
Investments		8		26
Recurring basis [Member] | Total [Member] | Syndicated loans [Member] | Consolidated investment entities [Member]
Assets
Investments		$ 2,429		$ 6,267

[1] As the Company elected the measurement alternative effective January 1, 2016, the carrying value of the CLOs’ debt is set equal to the fair value of the CLOs’ assets. See Note 2 and above for additional discussion on the measurement alternative. The estimated fair value of the CLOs’ debt was $2.7 billion at March 31, 2016.

[2] As the Company elected the measurement alternative effective January 1, 2016, the carrying value of the CLOs’ debt is set equal to the fair value of the CLOs’ assets. See Note 2 and below for additional discussion on the measurement alternative. The estimated fair value of the CLOs’ debt was $2.7 billion at March 31, 2016.