Taxes Based on Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Company's income before taxes, provision for income taxes and effective tax rate
Income before taxes	$ 110.8	$ 125.8	$ 178.2	$ 202.7
Provision for income taxes	37.5	42.0	60.1	64.2
Effective tax rate	34.00%	33.00%	34.00%	32.00%
Taxes Based on Income (Textuals) [Abstract]
Income tax reconciliation effect of discrete events	2.9		6.2
U.S. Federal statutory rate			35.00%
Reasonably possible decrease in unrecognized tax benefits during next 12 months	35		35
Significant change in unrecognized tax benefits is reasonably possible amount of cash payment	8		8
Income tax examinations by tax authorities, Year			2006
Tax matters offered to settle by foreign jurisdiction			$ 25

Income before taxes, provision for income taxes and effective tax rate.

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Income tax expense (or benefit) that is recognized in the interim period in which a specific event occurs, as distinguished from income tax expense that is recognized through the use of an annual estimated annual effective tax rate. Refer to ASC 740.270.25-1 and 270.10.50.1(d).

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Significant change in unrecognized tax benefits is reasonably possible amount of cash payment.

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Taxes Based on Income.

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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The tax year(s) being audited in connection with the income tax examination.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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The sum of the differences between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to all income tax settlements for the period.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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