Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Sep. 27, 2015
Cash flows from operating activities:
Net income (loss)	$ 176.3	$ (32.6)	$ 84.6
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation expense	48.7	46.1	36.2
Amortization of intangible assets	191.7	161.2	96.5
Change in allowance for doubtful accounts	(0.2)	0.7	(0.2)
Amortization of deferred financing cost	13.3	33.1	1.6
Loss (gain) on divestitures	1.2	(125.5)	0.0
Loss (gain) on disposition or impairment of assets	(2.7)	1.6	(1.1)
Deferred income taxes	31.0	(32.6)	(8.0)
Valuation allowance on net deferred income taxes	(77.2)	35.3	13.3
Charge for stock-based compensation	89.0	101.1	49.8
Change in assets and liabilities (net of acquisitions):
Accounts receivable	(20.2)	(22.1)	13.8
Inventories	(17.6)	80.2	11.1
Other current assets	8.7	(20.3)	(2.5)
Other assets	(19.8)	2.2	(7.6)
Accounts payable	47.2	(35.8)	(2.9)
Accrued liabilities	(2.7)	(7.7)	(12.9)
Other long-term liabilities	8.0	89.7	(2.4)
Net cash provided by operating activities	474.7	274.6	269.3
Cash flows from investing activities:
Purchases of property and equipment	(54.7)	(48.8)	(44.1)
Proceeds from sale of short term investments	0.1	0.4	0.6
Proceeds from the divestiture or sale of assets	(1.8)	321.0	0.0
Proceeds from the sale of investment	4.0	0.0	4.2
Payments for acquisitions, net of cash acquired	(42.0)	(1,686.8)	(363.9)
Net cash used in investing activities	(94.4)	(1,414.2)	(403.2)
Cash flows from financing activities:
Repayments of credit facility	(826.5)	(1,132.4)	(142.7)
Credit facility issuance costs	(1.7)	(53.8)	(8.7)
Proceeds from credit facility	435.0	3,494.3	425.0
Extinguishment of debt	(29.2)	(1,198.1)	0.0
Payments for Repurchase of Common Stock	0.0	0.0	(75.0)
Stock settled tax withholdings	4.9	42.4	18.1
Exercise proceeds from stock awards	2.4	5.1	47.6
Net cash (used in) provided by financing activities	(424.9)	1,072.7	228.1
Net increase (decrease) in cash and cash equivalents	(44.6)	(66.9)	94.2
Cash and cash equivalents at beginning of year	189.5	256.4	162.2
Cash and cash equivalents at end of year	144.9	189.5	256.4
Supplemental disclosure of cash flow information Cash paid during the year for:
Interest	104.9	89.1	27.4
Income taxes	$ 6.9	$ 11.2	$ 3.3