Schedule of Error Corrections (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 24, 2016	Sep. 30, 2017	Sep. 24, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Discontinued operations, net of tax	$ (6)	$ (137)	$ 38	$ (175)
Net income	$ 92	$ 193	$ 233	$ 449
Basic earnings (loss) per share
Discontinued operations	$ (0.01)	$ (0.26)	$ 0.07	$ (0.32)
Net earnings	0.18	0.36	0.45	0.82
Diluted earnings per share
Discontinued operations	(0.01)	(0.25)	0.07	(0.32)
Net earnings	$ 0.17	$ 0.35	$ 0.44	$ 0.81
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Discontinued operations, net of tax		$ (286)		$ (324)
Net income		$ 44		$ 300
Basic earnings (loss) per share
Discontinued operations		$ (0.54)		$ (0.60)
Net earnings		0.08		0.55
Diluted earnings per share
Discontinued operations		(0.54)		(0.60)
Net earnings		$ 0.08		$ 0.54
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Discontinued operations, net of tax		$ 149		$ 149
Net income		$ 149		$ 149
Basic earnings (loss) per share
Discontinued operations		$ 0.28		$ 0.28
Net earnings		0.28		0.27
Diluted earnings per share
Discontinued operations		0.29		0.28
Net earnings		$ 0.27		$ 0.27