Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020
Cash flows from operating activities:
Net income (loss)	$ 31	$ (224)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	195	207
Loss on disposal of property and equipment—net	0	1
Loss on extinguishment of debt	23	0
Amortization of deferred financing costs	7	9
Deferred tax provision (benefit)	6	(44)
Share-based compensation expense	23	19
(Benefit) provision for doubtful accounts	(13)	106
Changes in operating assets and liabilities:
(Increase) decrease in receivables	(516)	257
(Increase) decrease in inventories—net	(286)	142
Increase in prepaid expenses and other assets	(24)	(12)
Increase in accounts payable and cash overdraft liability	721	375
Increase (decrease) in accrued expenses and other liabilities	83	(66)
Net cash provided by operating activities	250	770
Cash flows from investing activities:
Acquisition of businesses—net of cash	0	(973)
Proceeds from sales of divested assets	5	7
Proceeds from sales of property and equipment	1	1
Purchases of property and equipment	(107)	(131)
Net cash used in investing activities	(101)	(1,096)
Cash flows from financing activities:
Proceeds from debt borrowings	900	3,645
Principal payments on debt and financing leases	(1,161)	(2,206)
Net proceeds from issuance of Series A convertible preferred stock	0	491
Dividends, Preferred Stock, Cash	(9)	0
Debt financing costs and fees	(18)	(33)
Proceeds from employee stock purchase plan	10	11
Proceeds from exercise of stock options	12	1
Tax withholding payments for net share-settled equity awards	(13)	(5)
Net cash (used in) provided by financing activities	(279)	1,904
Net (decrease) increase in cash, cash equivalents and restricted cash	(130)	1,578
Cash, cash equivalents and restricted cash—beginning of period	829	98
Cash, cash equivalents and restricted cash—end of period	699	1,676
Supplemental disclosures of cash flow information:
Interest paid—net of amounts capitalized	88	89
Income taxes paid—net	0	2
Property and equipment purchases included in accounts payable	27	14
Property and equipment transferred to assets held for sale	9	19
Leased assets obtained in exchange for financing lease liabilities	14	60
Leased assets obtained in exchange for operating lease liabilities	20	13
Cashless exercise of stock options	1	0
Paid-in-kind Series A convertible preferred stock dividends	$ 15	$ 5