Calculation of Net Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Earnings Per Share [Line Items]
Net income from continuing operations	$ 33	$ 74
Income from discontinued operations, net of tax	8	42
Net income	$ 41	$ 116
Weighted-average shares outstanding	555	515
Basic earnings per share:
Continuing operations	$ 0.06	$ 0.14
Discontinued operations	0.01	0.08
Net earnings per share	$ 0.07	$ 0.22
Net income from continuing operations	$ 33	$ 74
Income from discontinued operations, net of tax	8	42
Net income	$ 41	$ 116
Weighted-average shares outstanding	555	515
Stock options and restricted stock	8	17
Diluted weighted-average shares outstanding	563	532
Diluted earnings per share:
Continuing operations	$ 0.06	$ 0.14
Discontinued operations	0.01	0.08
Net diluted earnings per share	$ 0.07	$ 0.22