Investments - Equity Method Investments (Details) - Other invested assets - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 900	$ 866
Almacantar Group S.A.
Schedule of Equity Method Investments [Line Items]
Ownership percentage	36.00%	36.00%
Equity method investments	$ 494	$ 483

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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