Reconciliation of Measure of Division Operating Income to Consolidated Income Before Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended																12 Months Ended
	Dec. 29, 2018		Sep. 29, 2018		Jun. 30, 2018		Mar. 31, 2018		Dec. 30, 2017		Sep. 30, 2017		Jul. 01, 2017		Apr. 01, 2017		Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Division operating income	$ 24	[1],[2],[3]	$ 105	[1],[2]	$ 48	[1],[2]	$ 77	[1],[2]	$ 56	[1],[4],[5],[6]	$ 105	[1],[5],[6]	$ 41	[1],[5],[6]	$ 124	[1],[5],[6]	$ 254	$ 327	$ 518
Asset impairments	(7)								(3)				(1)				(7)	(4)	(15)
Merger and restructuring income (expenses), net	(27)		$ (14)		$ (14)		$ (17)		$ (32)		$ (22)		$ (20)		$ (20)		(72)	(94)	80
Legal expense accrual	(25)																(25)
Unallocated expenses																	(93)	(96)	(112)
Interest income																	25	22	22
Interest expense																	(121)	(62)	(80)
Loss on extinguishment and modification of debt	$ (15)																(15)		(15)
Other income, net																	15	12	14
Income from continuing operations before income taxes																	158	299	459
Operating Segments
Segment Reporting Information [Line Items]
Division operating income																	$ 451	$ 521	$ 565

[1] Due to rounding, the sum of the quarterly amounts may not equal the reported amounts for the year.

[2] Includes Merger and restructuring expenses, net totaling $17 million, $14 million, $14 million and $27 million in the first, second, third and fourth quarters of 2018, respectively. The fourth quarter of 2018 also includes asset impairments of $7 million and a legal expense of $25 million. Refer to Note 17 for additional information on the legal expense.

[3] The sum of the quarterly earnings per share does not equal the annual earnings per share due to differences in quarterly and annual weighted-average shares outstanding.

[4] Includes $205 million of incremental sales from acquisitions in the fourth quarter of 2017.

[5] Includes Merger and restructuring expenses, net totaling $20 million, $20 million, $22 million and $32 million in the first, second, third and fourth quarters of 2017, respectively. The second and fourth quarters of 2017 also include asset impairments of $1 million and $3 million, respectively.

[6] Reflects the reclassification of $3 million, $5 million, $3 million and $3 million in the first, second, third and fourth quarters of 2017, respectively, from Selling, general and administrative expenses to Other income, net associated with the retrospective adoption of a 2018 accounting standard affecting the presentation of defined benefit plan expenses. Refer to Note 1 for additional information.