Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 29, 2018

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	First Half Ended
	June 29, 2018		June 30, 2017
	(in millions)
Interest paid	$	97	$	83
Income tax payments	$	54	$	96
Income tax refunds	$	3	$	7