Reconciliation of Measure of Division Operating Income to Consolidated Income Before Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Segment Reporting Information [Line Items]
Total Divisions operating income	$ 80	$ 24
Asset impairments	(12)	(29)
Merger and restructuring expenses, net	(16)	(14)
Unallocated expenses	(22)	(31)
Interest income	3	6
Interest expense	(18)	(23)
Other income, net	1	2
Income before income taxes	66	9
Operating Segments
Segment Reporting Information [Line Items]
Total Divisions operating income	$ 130	$ 98