Consolidated Statements of Shareholders' Comprehensive Income - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Comprehensive Income
Shareholders' net income	$ 772	$ 560	$ 2,493	$ 1,971
Shareholders' other comprehensive income (loss), net of tax:
Net unrealized appreciation (depreciation), securities	0	(22)	(420)	52
Net unrealized appreciation (depreciation), derivatives	2	0	(11)	(3)
Net translation of foreign currencies	(29)	34	(136)	173
Postretirement benefits liability adjustment	13	10	31	36
Shareholders' other comprehensive income (loss), net of tax	(14)	22	(536)	258
Shareholders' comprehensive income (loss)	$ 758	$ 582	$ 1,957	$ 2,229

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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