Consolidated Statements of Cash Flows $ in Millions	12 Months Ended
	Dec. 29, 2018 USD ($)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Cash flows from operating activities of continuing operations:
Net income (loss)	$ 383.5	$ 7.1	$ (71.5)
Net income (loss) from discontinued operations, net of income taxes	354.6	10.7	(11.2)
Net income (loss) from continuing operations	28.9	(3.6)	(60.3)
Adjustments to reconcile net income (loss) from continuing operations to cash flows from operating activities:
Depreciation and amortization	194.6	188.6	151.1
Amortization of financing fees	3.5	1.9	0.5
Amortization of senior notes premium	(0.4)	(5.1)	(5.9)
Share-based compensation expense	17.3	17.5	7.0
(Benefit) provision for deferred income taxes	(6.7)	(33.9)	19.9
Commodity hedging loss (gain), net	0.3	(0.3)	9.7
Gain on extinguishment of long-term debt	(7.1)	(1.5)	0.0
Gain on sale of business	(6.0)	0.0	0.0
Loss on disposal of property, plant and equipment, net	9.4	10.2	6.6
Other non-cash items	(2.9)	1.9	9.7
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	(10.8)	(8.0)	(3.1)
Inventories	(0.5)	(2.0)	12.9
Prepaid expenses and other current assets	(4.0)	0.9	(4.6)
Other assets	(0.5)	2.1	(1.3)
Accounts payable and accrued liabilities and other liabilities	29.2	7.3	3.3
Net cash provided by operating activities from continuing operations	244.3	176.0	145.5
Cash flows from investing activities of continuing operations:
Acquisitions, net of cash received	(164.0)	(35.5)	(959.4)
Additions to property, plant and equipment	(130.8)	(121.3)	(95.1)
Additions to intangible assets	(13.2)	(5.6)	(4.2)
Proceeds from sale of property, plant and equipment and sale-leaseback	4.1	7.8	5.7
Proceeds from sale of business, net of cash sold	12.8	0.0	0.0
Proceeds from sale of equity securities	7.9	0.0	0.0
Other investing activities	0.5	1.0	0.4
Net cash used in investing activities from continuing operations	(282.7)	(153.6)	(1,052.6)
Cash flows from financing activities of continuing operations:
Payments of long-term debt	(264.5)	(101.5)	(0.5)
Issuance of long-term debt	2.7	750.0	498.7
Borrowings under ABL	98.4	0.0	0.0
Payments under ABL	(17.4)	0.0	0.0
Premiums and costs paid upon extinguishment of long-term debt	(12.5)	(7.7)	0.0
Issuance of common shares	6.4	3.5	366.8
Common shares repurchased and canceled	(74.9)	(3.8)	(5.7)
Financing fees	(1.5)	(11.1)	(10.1)
Dividends paid to common and preferred shareholders	(33.4)	(33.4)	(31.4)
Payment of contingent consideration for acquisitions	(2.8)	0.0	(10.8)
Other financing activities	2.9	0.5	0.1
Net cash (used in) provided by financing activities from continuing operations	(296.6)	596.5	807.1
Cash flows from discontinued operations:
Operating activities of discontinued operations	(97.6)	102.7	124.3
Investing activities of discontinued operations	1,225.5	(44.7)	(44.0)
Financing activities of discontinued operations	(769.7)	(643.4)	68.6
Net cash provided by (used in) discontinued operations	358.2	(585.4)	148.9
Effect of exchange rate changes on cash	(10.3)	6.3	(7.9)
Net increase in cash, cash equivalents and restricted cash	12.9	39.8	41.0
Cash and cash equivalents and restricted cash, beginning of year	157.9	118.1	77.1
Cash and cash equivalents and restricted cash, end of year	170.8	157.9	118.1
Cash and cash equivalents and restricted cash of discontinued operations, end of year	0.0	66.0	40.0
Cash and cash equivalents and restricted cash from continuing operations, end of year	170.8	91.9	78.1
Supplemental Non-cash Investing and Financing Activities:
Additions to property, plant and equipment through accounts payable and accrued liabilities and other liabilities	11.6	10.9	3.1
Accrued deferred financing fees	0.0	0.6	0.5
Dividends payable issued through accounts payable and other accrued liabilities	0.3	0.3	0.3
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	68.9	81.6	48.5
Cash paid for income taxes, net	$ 9.6	$ 1.9	$ 3.3