CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019
Cash flows from operating activities:
Net loss	$ (394)	$ (16)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	97	102
Amortization of debt discount and issuance costs	2	4
Charges for losses on receivables and inventories	16	14
Asset impairments	413	45
Loss on disposition of assets, net	5	1
Loss on extinguishment and modification of debt	12
Compensation expense for share-based payments	16	17
Deferred income taxes and deferred tax asset valuation allowances	(3)	(9)
Contingent consideration payments in excess of acquisition-date liability	(2)	(11)
Changes in working capital and other operating activities	18	(145)
Net cash provided by operating activities	180	2
Cash flows from investing activities:
Capital expenditures	(40)	(91)
Businesses acquired, net of cash acquired	(18)	(22)
Proceeds from collection of notes receivable	818
Other investing activities	2
Net cash provided by (used in) investing activities	762	(113)
Cash flows from financing activities:
Net payments on long and short-term borrowings	(30)	(48)
Debt retirement	(1,187)
Debt issuance	400
Cash dividends on common stock	(13)	(27)
Share purchases for taxes, net of proceeds from employee share-based transactions	(5)	(9)
Repurchase of common stock for treasury	(30)	(11)
Contingent consideration payments up to amount of acquisition-date liability	(1)	(12)
Other financing activities	(6)
Net cash used in financing activities	(872)	(107)
Effect of exchange rate changes on cash and cash equivalents	(6)	4
Net increase (decrease) in cash and cash equivalents	64	(214)
Cash, cash equivalents and restricted cash at beginning of period	700	660
Cash, cash equivalents and restricted cash at end of period	764	446
Supplemental information
Right-of-use assets obtained in exchange for new finance lease liabilities	3	12
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 63	$ 130