CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net earnings	$ 269	$ 157
Other comprehensive income (loss):
Foreign currency translation adjustments	(15)	2
Changes in unamortized net pension and other postretirement benefit gain, net of tax expense of $22 and $26	54	29
Changes in unamortized prior service cost, net of tax benefit of $3 and $0	(1)	(1)
Changes in unrealized gains on available-for-sale securities (Note 1)	0	1
Total other comprehensive income	38	31
Total comprehensive income	$ 307	$ 188