Intangible Assets (VOBA) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Roll Forward of VOBA
VOBA balance, beginning of year	$ 395	$ 466	$ 536
Amortization of Value of Business Acquired (VOBA)	(41)	(42)	(51)
VOBA Foreign exchange revaluation	1	(29)	(19)
VOBA balance, end of year	355	$ 395	$ 466
Intangible Assets Arising from Insurance Contracts Acquired in Business Combination, Amortization Expense, Fiscal Year Maturity [Abstract]
2017, VOBA	35
2018, VOBA	31
2019, VOBA	27
2020, VOBA	23
2021, VOBA	20
Total, VOBA	$ 136

Foreign exchange revaluation, value of business acquired.

No definition available.

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- Definition

Total amortization expense estimated to be recorded over the next five years for intangible assets arising from insurance contracts acquired in business combinations

+ References

No definition available.

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- Definition

The adjustment that represents the periodic charge against earnings to reduce the value of business acquired (VOBA) over the expected life of the underlying insurance contracts. VOBA reflects the estimated fair value of a life insurance business in force and represents the portion of the cost to acquire the business that is allocated to the value of the right to receive future cash flows from insurance contracts existing at the date of acquisition. Such value is the present value of the actuarially determined projected cash flows for the acquired policies. 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section S99
-Paragraph 2
-Subparagraph (2)
-URI http://asc.fasb.org/extlink&oid=27015749&loc=d3e569990-122904

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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- Definition

Carrying amount as of the balance sheet date of the intangible assets from insurance contracts acquired in a business combination.

+ References

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- Definition

Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for intangible assets arising from insurance contracts acquired in a business combination.

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- Definition

Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for intangible assets arising from insurance contracts acquired in a business combination.

+ References

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- Definition

Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for intangible assets arising from insurance contracts acquired in a business combination.

+ References

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Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for intangible assets arising from insurance contracts acquired in a business combination.

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Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for intangible assets arising from insurance contracts acquired in a business combination.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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