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Summary of Accounting Policies (Details) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Summary of Accounting Policies [Abstract]      
Allowance for doubtful accounts and sales allowances $ 15.0 $ 16.0  
Basic shares outstanding 99,123 97,702 95,959
Effect of potential common stock      
Common stock awards 891 1,040 1,213
Senior subordinated convertible notes 195 816 1,214
Diluted shares outstanding 100,209 99,558 98,386
Antidilutive stock options (in shares) 614,850 547,591 760,000
Foreign Currency Transaction Gain (Loss), before Tax (3.9) (2.8) 6.9
Goodwill impairment method Goodwill, which is not amortized, is tested for impairment on an annual basis (or an interim basis if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value) using a two-step process. The first step of the process utilizes both an income approach (discounted cash flows) and a market approach consisting of a comparable public company earnings multiples methodology to estimate the fair value of a reporting unit. To determine the reasonableness of the estimated fair values, the Company reviews the assumptions to ensure that neither the income approach nor the market approach provides significantly different valuations. If the estimated fair value exceeds the carrying value, no further work is required and no impairment loss is recognized. If the carrying value exceeds the estimated fair value, the goodwill of the reporting unit is potentially impaired and then the second step would be completed in order to measure the impairment loss by calculating the implied fair value of goodwill by deducting the fair value of all tangible and intangible net assets (including unrecognized intangible assets) of the reporting unit from the fair value of the reporting unit. If the implied fair value of goodwill is less than the carrying value of goodwill, a non-cash impairment loss would be recognized. Key assumptions used in the income and market methodologies are updated when the analysis is performed for each reporting unit. Various assumptions are utilized including forecasted operating results, strategic plans, economic projections, anticipated future cash flows, the weighted-average cost of capital, comparable transactions, market data and earnings multiples. The assumptions that have the most significant effect on the fair value calculations are the anticipated future cash flows, discount rates, and the earnings multiples. While the Company uses reasonable and timely information to prepare its cash flow and discount rate assumptions, actual future cash flows or market conditions could differ significantly resulting in future impairment charges related to recorded goodwill balances. The Company has 28 reporting units with individual goodwill amounts ranging from zero to $988 million. The Company concluded that the fair value of each of its reporting units was in excess of its carrying value, with no impairment indicated as of December 31, 2013. However, the fair value of one of the reporting units in the RF Technology segment was less than 5% above the carrying value at December 31, 2013 using the discounted cash flow methodology. The Company believes the market value of this unit to be significantly in excess of its carrying value based upon observed market data. Negative industry or economic trends, disruptions to its business, actual results significantly below expected results, unexpected significant changes or planned changes in the use of the assets, divestitures and market capitalization declines may have a negative effect on the fair value of Roper's reporting units. The following events or circumstances would be considered to determine whether interim testing of goodwill would be required: ·a significant adverse change in legal factors or in the business climate; ·an adverse action or assessment by a regulator; ·unanticipated competition; ·a loss of key personnel; ·a more-likely-than-not expectation that a reporting unit or a significant portion of a reporting unit will be sold or otherwise disposed of; ·the testing for recoverability under the Impairment or Disposal of Long-Lived Assets of a significant asset group within a reporting unit; and·recognition of a goodwill impairment loss in the financial statements of a subsidiary that is a component of a reporting unit.    
Total goodwill reporting units 28    
Minimum carrying value of goodwill 0    
Maximum carrying value of goodwill 988    
The approximate amount of earnings of foreign subsidiaries 939    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Research and development costs 145.7 125.9 121.7
Contract revenue recognized under the percentage-of-completion method 205.0 145.5 151.5
Capitalized software $ 8.0 $ 10.9  
Amendment to intangibles testing [Member]
      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
New Accounting Pronouncement or Change in Accounting Principle, Name In July 2012, the FASB issued an amendment to accounting rules related to the testing of indefinite-lived intangibles    
New Accounting Pronouncement or Change in Accounting Principle, Description The new accounting rules permit an entity to first assess qualitative factors to determine if it is more likely than not that an indefinite-lived asset is impaired as a basis for determining whether it is necessary to perform the quantitative impairment test prescribed under current accounting rules. Roper adopted this guidance on January 1, 2013. The guidance did not have an impact on the Company's results of operations, financial position or cash flows.    
Buildings [Member] | Minimum [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful life 20 years    
Buildings [Member] | Maximum [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful life 30 years    
Machinery and equipment [Member] | Minimum [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful life 8 years    
Machinery and equipment [Member] | Maximum [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful life 12 years    
Office Equipment [Member] | Minimum [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful life 3 years    
Office Equipment [Member] | Maximum [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful life 5 years