Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (VODA and VOCRA) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Insurance [Abstract]
Balance at January 1,	$ 384	$ 459	$ 509
Amortization	(42)	(47)	(51)
Effect of foreign currency translation	(7)	(28)	1
Balance at December 31,	335	384	459
Accumulated amortization	$ 434	$ 392	$ 345

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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No definition available.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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