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Calculation of Net Earning Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Basic Earnings Per Share
Net income from continuing operations	$ 8	$ 33
Income from discontinued operations, net of tax		8
Net income	$ 8	$ 41
Weighted-average shares outstanding	543	555
Continuing operations	$ 0.01	$ 0.06
Discontinued operations		0.01
Net basic earnings per common share	$ 0.01	$ 0.07
Diluted Earnings Per Share
Net income from continuing operations	$ 8	$ 33
Income from discontinued operations, net of tax		8
Net income	$ 8	$ 41
Weighted-average shares outstanding	543	555
Stock options and restricted stock	18	8
Diluted weighted-average shares outstanding	561	563
Continuing operations	$ 0.01	$ 0.06
Discontinued operations		0.01
Net diluted earnings per common share	$ 0.01	$ 0.07

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