Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 71	$ 67
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	81	81
Amortization of deferred financing costs	1	1
Deferred tax (benefit) provision	(3)	27
Share-based compensation expense	6	7
Provision for doubtful accounts	6	3
Changes in operating assets and liabilities:
Increase in receivables	(131)	(135)
Decrease in inventories—net	7	1
Increase in prepaid expenses and other assets	(8)	(12)
Increase in accounts payable and cash overdraft liability	183	283
Decrease in accrued expenses and other liabilities	(59)	(131)
Net cash provided by operating activities	154	192
Cash flows from investing activities:
Acquisition of businesses—net of cash	0	(1)
Proceeds from sales of property and equipment	0	1
Purchases of property and equipment	(61)	(57)
Net cash used in investing activities	(61)	(57)
Cash flows from financing activities:
Proceeds from debt borrowings	1,004	864
Principal payments on debt and financing leases	(1,119)	(1,042)
Contingent consideration paid for business acquisitions	0	(1)
Proceeds from employee stock purchase plan	5	4
Proceeds from exercise of stock options	6	7
Tax withholding payments for net share-settled equity awards	(2)	0
Net cash used in financing activities	(106)	(168)
Net decrease in cash, cash equivalents and restricted cash	(13)	(33)
Cash, cash equivalents and restricted cash—beginning of period	105	119
Cash, cash equivalents and restricted cash—end of period	92	86
Supplemental disclosures of cash flow information:
Interest (net of amounts capitalized) paid	36	33
Income taxes paid—net	1	1
Property and equipment purchases included in accounts payable	17	22
Leased assets obtained in exchange for financing lease liabilities	38	50
Leased assets obtained in exchange for operating lease liabilities	2	0
Cashless exercise of stock options	$ 1	$ 0