Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net sales	$ 6,443	$ 6,158	$ 12,474	$ 11,981
Cost of goods sold	5,301	5,044	10,280	9,875
Gross profit	1,142	1,114	2,194	2,106
Operating expenses:
Distribution, selling and administrative costs	948	909	1,869	1,796
Restructuring (benefits) costs	0	(1)	0	1
Total operating expenses	948	908	1,869	1,797
Operating income	194	206	325	309
Other income—net	(2)	(3)	(4)	(6)
Interest expense—net	42	48	84	91
Income before income taxes	154	161	245	224
Income tax provision	38	35	58	31
Net income	116	126	187	193
Other comprehensive income—net of tax:
Changes in retirement benefit obligations	1	25	2	26
Unrecognized (loss) gain on interest rate swaps	(8)	3	(14)	12
Comprehensive income	$ 109	$ 154	$ 175	$ 231
Net income per share
Basic (in dollars per share)	$ 0.53	$ 0.58	$ 0.86	$ 0.90
Diluted (in dollars per share)	$ 0.53	$ 0.58	$ 0.85	$ 0.89
Weighted-average common shares outstanding
Basic (in shares)	218	216	218	215
Diluted (in shares)	219	218	219	217