CONSOLDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017
Cash flows from operating activities:
Net income	$ 179	$ 25
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	86	141
Amortization of debt issuance costs and discounts	9	10
Share-based compensation	24	15
Deferred income taxes	3	(10)
Unrealized gain on forward interest rate swaps	(18)	(1)
Other, net	2	2
Changes in operating assets and liabilities:
Accounts receivable, net	(26)	104
Inventories, net	(11)	(68)
Other assets	(9)	15
Accounts payable	21	13
Accrued liabilities	(48)	(21)
Deferred revenue	22	20
Income taxes	24	(35)
Other operating activities	8	(7)
Net cash provided by operating activities	266	203
Cash flows from investing activities:
Purchases of property, plant and equipment	(33)	(22)
Proceeds from sale of long-term investments	2	0
Purchases of long-term investments	(2)	0
Net cash used in investing activities	(33)	(22)
Cash flows from financing activities:
Payment of debt issuance costs and discounts	(2)	0
Payments of long-term debt	(1,114)	(240)
Proceeds from issuance of long-term debt	879	0
Payments of debt extinguishment costs	(1)	0
Proceeds from exercise of stock options and stock purchase plan purchases	6	7
Taxes paid related to net share settlement of equity awards	(10)	(5)
Net cash used in financing activities	(242)	(238)
Effect of exchange rate changes on cash	(7)	(4)
Net decrease in cash and cash equivalents	(16)	(61)
Cash and cash equivalents at beginning of period	62	156
Cash and cash equivalents at end of period	46	95
Supplemental disclosures of cash flow information:
Income taxes paid	21	43
Interest paid	$ 52	$ 70