Financial Instruments and Derivative Instruments (Details 4) (USD $) In Millions, unless otherwise specified	Mar. 29, 2015	Dec. 31, 2014
Long-term debt
Gross carrying amount	$ 578.9us-gaap_DebtInstrumentCarryingAmount	$ 579.7us-gaap_DebtInstrumentCarryingAmount
Estimated fair value	$ 597.2us-gaap_LongTermDebtFairValue	$ 599.3us-gaap_LongTermDebtFairValue
5.85% Senior notes due 2016
Senior notes
Interest rate (as a percent)	5.85%
5.05% Senior notes due 2020
Senior notes
Interest rate (as a percent)	5.05%

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant