CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019
Cash flows from operating activities:
Net income (loss)	$ (337)	$ 44
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	143	154
Amortization of debt discount and issuance costs	2	6
Charges for losses on receivables and inventories	27	22
Asset impairments	423	50
Loss on disposition of assets, net	6	2
Loss on extinguishment and modification of debt	12
Compensation expense for share-based payments	28	25
Deferred income taxes and deferred tax asset valuation allowances	11	23
Contingent consideration payments in excess of acquisition-date liability	(2)	(11)
Changes in working capital and other operating activities	176	(101)
Net cash provided by operating activities	489	214
Cash flows from investing activities:
Capital expenditures	(54)	(123)
Businesses acquired, net of cash acquired	(28)	(21)
Proceeds from collection of notes receivable	818
Other investing activities	10	2
Net cash provided by (used in) investing activities	746	(142)
Cash flows from financing activities:
Net payments on long and short-term borrowings	(337)	(74)
Debt retirement	(1,196)
Debt issuance	400
Cash dividends on common stock	(13)	(41)
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)	2
Net cash used in financing activities	(1,188)	(145)
Effect of exchange rate changes on cash and cash equivalents	(4)	3
Net increase (decrease) in cash and cash equivalents	43	(70)
Cash, cash equivalents and restricted cash at beginning of period	700	660
Cash, cash equivalents and restricted cash at end of period	743	590
Supplemental information
Right-of-use assets obtained in exchange for new finance lease liabilities	22	21
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 85	$ 211