Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net earnings		$ 717	$ 592
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period		824	375
Unrealized gains (losses) on fixed maturity securities:
Unrealized holding gains (losses) on fixed maturity securities during period	[1]	(1,931)	(526)
Reclassification adjustment for realized (gains) losses on fixed maturity securities included in net earnings	[1]	(2)	16
Unrealized gains (losses) on derivatives during period		6	2
Pension liability adjustment during period		(3)	(2)
Total other comprehensive income (loss) before income taxes		(1,106)	(135)
Income tax expense (benefit) related to items of other comprehensive income (loss)		(763)	(137)
Other comprehensive income (loss), net of income taxes	[2]	(343)	2
Total comprehensive income (loss)		$ 374	$ 594

[1] See Note 1 of the Notes to the Consolidated Financial Statements for the adoption of accounting guidance on January 1, 2018 related to financial instruments.

[2] All amounts in the table above are net of tax.