Condensed Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ 127	$ 192
Other comprehensive income (loss):
Amortization of retirement benefit adjustments, net of tax of $6 and $9	13	19
Foreign currency translation adjustment, net of tax of $1 and $(1)	2	(37)
Net realized gains on derivative hedging instruments	0	(1)
Net unrealized gains on securities, net of tax of $(2) and $–	2	0
Current period change in Other comprehensive income (loss)	17	(19)
Comprehensive income	$ 144	$ 173