Investments (Changes in Net Unrealized Investment Gains (Losses)) (Details) $ in Millions	9 Months Ended
Sep. 30, 2019 USD ($)
Investments, Debt and Equity Securities [Abstract]
Balance, December 31, 2018	$ 744
Unrealized investment gains (losses) during the period	6,005
Unrealized investment gains (losses) relating to:
Future policy benefits	(2,164)
DAC, VOBA and DSI	(283)
Deferred income tax benefit (expense)	(747)
Balance, September 30, 2019	3,555
Change in net unrealized investment gains (losses)	$ 2,811

This item presents the increase (decrease) in net unrealized investment gains (losses) attributable to the Company.

No definition available.

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- Definition

This item presents the increase (decrease) in net unrealized investment gains (losses) related to DAC and VOBA.

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No definition available.

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- Definition

This item presents the increase (decrease) in net unrealized investment gains (losses) related to insurance liability gain (loss) recognition.

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No definition available.

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- Definition

This item presents the increase (decrease) in net unrealized investment gains (losses) related to unrealized investment gains (losses) during the period.

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- Definition

This item represents the tax effects occurring during the period which are related to the net unrealized gain (loss) resulting from changes in the fair [carrying] value during the period of available-for-sale securities and from changes in certain insurance related assets and liabilities. Such tax affects would have been charged or credited directly to other comprehensive income or to related components of shareholders' equity.

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- Definition

This item presents net unrealized investment gains (losses) attributable to the Company.

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