Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 1,523	$ 1,551
Other comprehensive (loss) income, net of tax:
Change in net unrealized losses/gains on investments	(689)	357
Change in non-credit component of other-than-temporary impairment losses on investments	(32)	0
Change in net unrealized gains/losses on cash flow hedges	3	3
Change in net periodic pension and postretirement costs	7	3
Foreign currency translation adjustments	(1)	0
Other comprehensive (loss) income	(712)	363
Total comprehensive income	$ 811	$ 1,914

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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