Subsidiary Guarantors of the Public Bonds (Consolidated Condensed Statements of Cash Flow) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 28, 2015	Mar. 22, 2014
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ (43.0)	$ (56.1)
INVESTING ACTIVITIES
Additions to property, plant and equipment	(6.4)	(5.6)
Investment in joint venture	0	(0.7)
Other	(0.7)	(0.4)
Net cash used in investing activities	(7.1)	(6.7)
FINANCING ACTIVITIES
Net borrowings under revolving credit agreement	14.5	34.0
Payments on long-term debt	(58.0)	(9.7)
Cash dividends paid	(6.1)	(6.3)
Purchases of shares under employee stock plans	(7.4)	(9.3)
Proceeds from the exercise of stock options	5.8	2.8
Excess tax benefits from stock-based compensation	3.4	3.5
Net cash provided by (used in) financing activities	(47.8)	15.0
Effect of foreign exchange rate changes	(4.6)	0.4
Decrease in cash and cash equivalents	(102.5)	(47.4)
Cash and cash equivalents at beginning of the year	223.8	214.2
Cash and cash equivalents at end of the period	121.3	166.8
Parent [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	150.8	(32.0)
INVESTING ACTIVITIES
Additions to property, plant and equipment	(3.9)	(2.2)
Other	(0.6)	(0.4)
Net cash used in investing activities	(4.5)	(2.6)
FINANCING ACTIVITIES
Net borrowings under revolving credit agreement	14.5	34.0
Payments on long-term debt	(58.0)	(9.7)
Cash dividends paid	(6.1)	(6.3)
Purchases of shares under employee stock plans	(7.4)	(9.3)
Proceeds from the exercise of stock options	5.8	2.8
Excess tax benefits from stock-based compensation	3.4	3.5
Net cash provided by (used in) financing activities	(47.8)	15.0
Decrease in cash and cash equivalents	98.5	(19.6)
Cash and cash equivalents at beginning of the year	11.4	18.8
Cash and cash equivalents at end of the period	109.9	(0.8)
Subsidiary Guarantors [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(88.8)	(8.2)
INVESTING ACTIVITIES
Additions to property, plant and equipment	(2.2)	(3.0)
Other	(0.1)
Net cash used in investing activities	(2.3)	(3.0)
FINANCING ACTIVITIES
Net borrowings under revolving credit agreement	0	0
Decrease in cash and cash equivalents	(91.1)	(11.2)
Cash and cash equivalents at beginning of the year	3.3	15.0
Cash and cash equivalents at end of the period	(87.8)	3.8
Non-Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(105.0)	(15.9)
INVESTING ACTIVITIES
Additions to property, plant and equipment	(0.3)	(0.4)
Investment in joint venture		(0.7)
Net cash used in investing activities	(0.3)	(1.1)
FINANCING ACTIVITIES
Net borrowings under revolving credit agreement	0	0
Effect of foreign exchange rate changes	(4.6)	0.4
Decrease in cash and cash equivalents	(109.9)	(16.6)
Cash and cash equivalents at beginning of the year	209.1	180.4
Cash and cash equivalents at end of the period	99.2	163.8
Eliminations [Member]
FINANCING ACTIVITIES
Decrease in cash and cash equivalents		0
Cash and cash equivalents at beginning of the year		0
Cash and cash equivalents at end of the period	$ 0	$ 0