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Fair Value of Assets and Liabilities (Details 4) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Recurring Level 3 assets | $ 3 | $ (3) | $ 13 | $ (30)
Gains (losses) for Level 3 liabilities still held at the balance sheet date, included in earnings | 0 | 7 | 3 | (8)
Total realized and unrealized gains (losses) included in net income, recurring Level 3 assets and liabilities | 9 | 3 | 23 | (26)
Gain (Loss) on Investments |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Total realized and unrealized gains (losses) included in net income, recurring Level 3 assets and liabilities | 3 | 4 | 16 | (38)
Realized capital gains and losses |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Change in unrealized gain (loss) | (1) | (9) |  | (38)
Gain reclassified from AOCI into income (net investment income) |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Change in unrealized gain (loss) | 4 | 6 | 14 | 8
Interest credited to contractholder funds |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Change in unrealized gain (loss) | (1) | (7) | (6) | (6)
Life and annuity contract benefits |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Change in unrealized gain (loss) | 1 | 14 | 8 | (2)
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 | 0 | 7 | 3 | (8)
Municipal |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Recurring Level 3 assets | (3) | 1 | (3) | 1
Corporate |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Recurring Level 3 assets | 0 | 3 | 0 | 1
Fixed income securities |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Recurring Level 3 assets | (3) | 4 | (3) | 2
Equity securities |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Recurring Level 3 assets | 4 | (8) | 14 | (32)
Free-standing derivatives, net |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Recurring Level 3 assets | 2 | 1 | 3 | 0
Other assets |  |  |  |
Gains (losses) included in net income for Level 3 assets and liabilities: |  |  |  |
Recurring Level 3 assets | $ 0 | $ 0 | $ (1) | $ 0

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- Definition This item represents the amount of the total realized and unrealized gains or losses for the period which are included in the statement of income (or changes in net assets); the fair value of which assets and liabilities was or is measured on a recurring basis using significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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