CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net earnings	$ 130	$ 227	$ 311	$ 476
Other comprehensive income (loss):
Foreign currency translation adjustments	24	(5)	35	34
Actuarial gains, net of tax expense of $12, $15, $62 and $40	18	29	90	70
Prior service costs, net of tax benefit of $0, $0, $1 and $0	(1)	(1)	(5)	(3)
Unrealized gains on available-for-sale securities	1	0	2	1
Total other comprehensive income	42	23	122	102
Total comprehensive income	$ 172	$ 250	$ 433	$ 578