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Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Fair Value of Assets and Liabilities - Change in unrealized gains and losses included in net income for level 3 assets and liabilities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Gains (losses) included in net income for Level 3 assets and liabilities:
Recurring Level 3 assets	$ 13	$ 9	$ (16)	$ 13
Gains (losses) for Level 3 liabilities still held at the balance sheet date, included in earnings	(69)	(12)	(21)	(40)
Gains (losses) for Level 3 assets and liabilities still held at the balance sheet date, included in earnings	(56)	(3)	(37)	(27)
Changes in unrealized net capital gains and losses reported in OCI	(12)		(13)
Contractholder funds: Derivatives embedded in life and annuity contracts
Gains (losses) included in net income for Level 3 assets and liabilities:
Gains (losses) for Level 3 liabilities still held at the balance sheet date, included in earnings	(69)	(12)	(21)	(40)
Municipal
Gains (losses) included in net income for Level 3 assets and liabilities:
Recurring Level 3 assets	1	0	1	0
Changes in unrealized net capital gains and losses reported in OCI	2		2
Corporate
Gains (losses) included in net income for Level 3 assets and liabilities:
Recurring Level 3 assets	0	0	1	0
Fixed income securities
Gains (losses) included in net income for Level 3 assets and liabilities:
Recurring Level 3 assets	1	0	2	0
Equity securities
Gains (losses) included in net income for Level 3 assets and liabilities:
Recurring Level 3 assets	12	10	(18)	14
Free-standing derivatives, net
Gains (losses) included in net income for Level 3 assets and liabilities:
Recurring Level 3 assets	0	(1)	0	(1)
Corporate - public
Gains (losses) included in net income for Level 3 assets and liabilities:
Changes in unrealized net capital gains and losses reported in OCI	(8)		(7)
Corporate - privately placed
Gains (losses) included in net income for Level 3 assets and liabilities:
Changes in unrealized net capital gains and losses reported in OCI	(3)		(5)
ABS
Gains (losses) included in net income for Level 3 assets and liabilities:
Changes in unrealized net capital gains and losses reported in OCI	(3)		(3)
Net Investment Income
Gains (losses) included in net income for Level 3 assets and liabilities:
Recurring Level 3 assets	0	5	(23)	5
Realized capital gains (losses)
Gains (losses) included in net income for Level 3 assets and liabilities:
Recurring Level 3 assets	13	4	7	8
Life contract benefits
Gains (losses) included in net income for Level 3 assets and liabilities:
Recurring Level 3 assets	10	(5)	(14)	3
Interest credited to contractholder funds
Gains (losses) included in net income for Level 3 assets and liabilities:
Recurring Level 3 assets	$ (79)	$ (7)	$ (7)	$ (43)