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Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 29, 2012 | Dec. 31, 2011 | Dec. 25, 2010
Principles of consolidation [Abstract] |  |  |
Non-controlling ownership interest of Mueller-Xingrong (in hundredths) | 49.50% |  |
Cash equivalents [Abstract] |  |  |
Temporary investments | $ 86.0 | $ 322.1 |
Restricted cash | 3.7 | 13.0 |
Foreign currency translation [Abstract] |  |  |
Foreign currency transaction gains (losses) | 0.3 | (0.7) | (2.2)
Level 2 [Member] |  |  |
Fair Value of Financial Instruments [Line Items] |  |  |
Debt Instruments, Fair Value Disclosure |  | $ 197.0 |
Stock Options [Member] |  |  |
Earnings per share [Abstract] |  |  |
Stock options were excluded from the computation of diluted earnings per share (in shares) |  |  | 1.3
Buildings [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 20 years |  |
Buildings [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 40 years |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 5 years |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 20 years |  |

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