Condensed Consolidating Financial Statements - Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities from continuing operations	$ (29.7)	$ 2.5	$ 21.9
Investing activities:
Cash paid for acquisitions, net of cash acquired	0.0	(2.6)	2.2
Change in restricted cash	4.7	(0.4)	0.4
Investment in affiliated companies	0.0	0.0	0.0
Capital expenditures	(11.3)	(11.6)	(13.3)
Proceeds from sale of assets	0.9	0.0	0.0
Proceeds from the disposition of discontinued operations			0.0
Net cash used in investing activities from continuing operations	(5.7)	(14.6)	(10.7)
Financing activities:
Cash paid for contingent acquisition consideration	(1.1)	0.0	(2.1)
Proceeds from the issuance of long-term debt	0.0	618.5	0.0
Extinguishment of long-term debt	(175.0)	(661.5)	0.0
Credit agreement borrowings		41.0
Repayment of debt	(42.0)	(1.0)	(1.0)
Debt issuance costs	0.0	(10.0)	0.0
Proceeds from the sale of employee stock purchase plan shares	3.4	3.3	1.1
Financing from affiliated companies	0.0	0.0	0.0
Other, net	(1.1)
Net cash used in financing activities from continuing operations	(214.7)	(9.7)	(2.0)
Net cash flows of continuing operations	(250.1)	(21.8)	9.2
Net operating cash flows of discontinued operations	2.8	4.1	(1.4)
Net investing cash flows from discontinued operations	242.5	(2.6)	(2.0)
Effect of exchange rate changes on cash and cash equivalents	(0.2)	(0.4)	0.0
Net increase (decrease) in cash and cash equivalents	(5.0)	(20.7)	5.8
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities from continuing operations	0.3	(73.0)	(64.3)
Investing activities:
Cash paid for acquisitions, net of cash acquired		0.0	0.0
Change in restricted cash	0.0	0.0	0.0
Investment in affiliated companies	(36.1)	0.0	0.0
Capital expenditures	(1.0)	(0.8)	(1.4)
Proceeds from sale of assets	0.0
Proceeds from the disposition of discontinued operations			0.0
Net cash used in investing activities from continuing operations	(37.1)	(0.8)	(1.4)
Financing activities:
Cash paid for contingent acquisition consideration			0.0
Proceeds from the issuance of long-term debt		618.5
Extinguishment of long-term debt	(175.0)	(661.5)
Credit agreement borrowings		41.0
Repayment of debt	(41.0)	0.0	0.0
Debt issuance costs		(10.0)
Proceeds from the sale of employee stock purchase plan shares	3.4	3.3	1.1
Financing from affiliated companies	0.0	68.5	69.5
Other, net	0.0
Net cash used in financing activities from continuing operations	(212.6)	59.8	70.6
Net cash flows of continuing operations	(249.4)	(14.0)	4.9
Net operating cash flows of discontinued operations	0.0	0.0	0.0
Net investing cash flows from discontinued operations	243.2	0.0	0.0
Effect of exchange rate changes on cash and cash equivalents	0.0	0.0	0.0
Net increase (decrease) in cash and cash equivalents	(6.2)	(14.0)	4.9
Subsidiary Guarantors on a Combined Basis
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities from continuing operations	(33.1)	76.8	84.0
Investing activities:
Cash paid for acquisitions, net of cash acquired		(2.6)	2.2
Change in restricted cash	4.7	(0.4)	0.4
Investment in affiliated companies	0.0	(68.5)	(69.5)
Capital expenditures	(9.5)	(9.7)	(10.4)
Proceeds from sale of assets	0.9
Proceeds from the disposition of discontinued operations			0.0
Net cash used in investing activities from continuing operations	(3.9)	(81.2)	(77.3)
Financing activities:
Cash paid for contingent acquisition consideration			(2.1)
Proceeds from the issuance of long-term debt		0.0
Extinguishment of long-term debt	0.0	0.0
Credit agreement borrowings		0.0
Repayment of debt	0.0	0.0	0.0
Debt issuance costs		0.0
Proceeds from the sale of employee stock purchase plan shares	0.0	0.0	0.0
Financing from affiliated companies	36.1	0.0	0.0
Other, net	(1.1)
Net cash used in financing activities from continuing operations	35.0	0.0	(2.1)
Net cash flows of continuing operations	(2.0)	(4.4)	4.6
Net operating cash flows of discontinued operations	3.1	3.8	(2.8)
Net investing cash flows from discontinued operations	(0.4)	(2.2)	(0.6)
Effect of exchange rate changes on cash and cash equivalents	0.0	0.0	0.0
Net increase (decrease) in cash and cash equivalents	0.7	(2.8)	1.2
Non-Guarantors on a Combined Basis
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities from continuing operations	3.1	(1.3)	2.2
Investing activities:
Cash paid for acquisitions, net of cash acquired		0.0	0.0
Change in restricted cash	0.0	0.0	0.0
Investment in affiliated companies	0.0	0.0	0.0
Capital expenditures	(0.8)	(1.1)	(1.5)
Proceeds from sale of assets	0.0
Proceeds from the disposition of discontinued operations			0.0
Net cash used in investing activities from continuing operations	(0.8)	(1.1)	(1.5)
Financing activities:
Cash paid for contingent acquisition consideration			0.0
Proceeds from the issuance of long-term debt		0.0
Extinguishment of long-term debt	0.0	0.0
Credit agreement borrowings		0.0
Repayment of debt	(1.0)	(1.0)	(1.0)
Debt issuance costs		0.0
Proceeds from the sale of employee stock purchase plan shares	0.0	0.0	0.0
Financing from affiliated companies	0.0	0.0	0.0
Other, net	0.0
Net cash used in financing activities from continuing operations	(1.0)	(1.0)	(1.0)
Net cash flows of continuing operations	1.3	(3.4)	(0.3)
Net operating cash flows of discontinued operations	(0.3)	0.3	1.4
Net investing cash flows from discontinued operations	(0.3)	(0.4)	(1.4)
Effect of exchange rate changes on cash and cash equivalents	(0.2)	(0.4)	0.0
Net increase (decrease) in cash and cash equivalents	0.5	(3.9)	(0.3)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities from continuing operations	0.0	0.0	0.0
Investing activities:
Cash paid for acquisitions, net of cash acquired		0.0	0.0
Change in restricted cash	0.0	0.0	0.0
Investment in affiliated companies	36.1	68.5	69.5
Capital expenditures	0.0	0.0	0.0
Proceeds from sale of assets	0.0
Proceeds from the disposition of discontinued operations			0.0
Net cash used in investing activities from continuing operations	36.1	68.5	69.5
Financing activities:
Cash paid for contingent acquisition consideration			0.0
Proceeds from the issuance of long-term debt		0.0
Extinguishment of long-term debt	0.0	0.0
Credit agreement borrowings		0.0
Repayment of debt	0.0	0.0	0.0
Debt issuance costs		0.0
Proceeds from the sale of employee stock purchase plan shares	0.0	0.0	0.0
Financing from affiliated companies	(36.1)	(68.5)	(69.5)
Other, net	0.0
Net cash used in financing activities from continuing operations	(36.1)	(68.5)	(69.5)
Net cash flows of continuing operations	0.0	0.0	0.0
Net operating cash flows of discontinued operations	0.0	0.0	0.0
Net investing cash flows from discontinued operations	0.0	0.0	0.0
Effect of exchange rate changes on cash and cash equivalents	0.0	0.0	0.0
Net increase (decrease) in cash and cash equivalents	$ 0.0	$ 0.0	$ 0.0