Business Acquisition, Consideration to be Transferred, Planned Acquisition

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- Definition

Business Acquisition, Percentage of Interests Acquired, Planned Acquisition

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- Definition

Equity Method Investment, Shares Owned

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Other Shareholders, Ownership Percentage

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- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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No definition available.

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- Definition

Value of all classes of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares exclude common shares repurchased by the entity and held as treasury shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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- Definition

This item represents the aggregate value of each identified investment accounted for under the equity method of accounting based on the quoted market price for those investments in common stock for which a quoted market price is available.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
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-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (e)
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- Definition

The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or the sale of investment in consolidated subsidiaries (generally greater than 50 percent).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Price of a single share of a number of saleable stocks of a company.

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Fair Value Measurements (Equity Method Investments, Summarized Financial Information) (Details) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2016 ZAR / shares	Feb. 24, 2015 USD ($)	Dec. 31, 2014 ZAR / shares
Schedule of Equity Method Investments [Line Items]
Carrying value of equity method investments	$ 389	$ 347
Unrealized investment gains (losses), Pre-Tax	21	$ 1	$ 0
Gain from deconsolidation of subsidiary	11
Alexander Forbes Group Holdings Limited
Schedule of Equity Method Investments [Line Items]
Carrying value of equity method investments	$ 247
Equity investment shares owned by the Company (in shares) \| shares	443
Market value of equity method investment	$ 251
Share price \| ZAR / shares				ZAR 7.95
Alexander Forbes Group Holdings Limited \| Mercer Consulting Group
Schedule of Equity Method Investments [Line Items]
Percentage of interest acquired						33.00%
Share price \| ZAR / shares						ZAR 7.50
Benefitfocus \| Mercer Consulting Group
Schedule of Equity Method Investments [Line Items]
Percentage of interest acquired					9.90%
Business acquisition, consideration to be transferred, planned acquisition					$ 75
Common stock, value, outstanding	84
Unrealized investment gains (losses), Pre-Tax	$ 21
Marsh India Insurance Brokers Limited
Schedule of Equity Method Investments [Line Items]
Percentage of ownership in equity method investment	26.00%
Local shareholders, ownership percentage	74.00%