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Business Acquisitions (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
ITrade Network Acquisition [Member] |  |  |
Fair value of assets acquired and liabilities assumed [Abstract] |  |  |
Current assets |  | $ 14,174,000 |
Other assets |  | 2,998,000 |
Intangible assets |  | 313,600,000 |
Goodwill |  | 335,971,000 |
Total assets acquired |  | 666,743,000 |
Current liabilities |  | (15,301,000) |
Other liabilities |  | (128,841,000) |
Net assets acquired |  | 522,601,000 |
Business Acquisition, Effective Date of Acquisition |  | July 27, 2010 |
Description of Acquired Entity |  | a global provider of software as a service ("SaaS")-based trading network and business intelligence solutions |
Name of Acquired Entity |  | iTradeNetwork, Inc |
Reason for Business Combination |  | The Company acquired iTrade in order to complement and expand existing software services at other Roper businesses |
Purchase Price Allocation Goodwill Amount |  | 335,971,000 |
Purchase Price Allocation Intangible Assets Amount |  | 313,600,000 |
Heartscape Acquisition [Member] |  |  |
Fair value of assets acquired and liabilities assumed [Abstract] |  |  |
Business Acquisition, Effective Date of Acquisition |  | February 22, 2010 |
Description of Acquired Entity |  | a technology with the capability to improve the speed and accuracy of detecting heart attacks |
Name of Acquired Entity |  | Heartscape, Inc |
Total Acquisitions [Member] |  |  |
Fair value of assets acquired and liabilities assumed [Abstract] |  |  |
Intangible assets | 91,000,000 | 320,000,000 | 126,000,000
Goodwill | 149,000,000 | 345,000,000 | 246,000,000
Trade names that are not subject to amortization | 3,000,000 | 35,000,000 | 27,000,000
Cost of Acquired Entity Purchase Price | 234,000,000 | 538,000,000 | 353,000,000
Purchase Price Allocation Goodwill Amount | 149,000,000 | 345,000,000 | 246,000,000
Purchase Price Allocation Intangible Assets Amount | 91,000,000 | 320,000,000 | 126,000,000
Cost of Acquired Entity Transaction Costs | 2,100,000 | 2,100,000 | 2,200,000
Business acquisitions completed during the period, number | $ 3 | $ 2,000,000 |
NDI Holdings Corp Acquisition [Member] |  |  |
Fair value of assets acquired and liabilities assumed [Abstract] |  |  |
Business Acquisition, Effective Date of Acquisition | June 3, 2011 |  |
Description of Acquired Entity | a provider of 3-D measurement technology for medical applications in computer-assisted surgery and computer-assisted therapy. |  |
Name of Acquired Entity | NDI Holding Corp. |  |
Reason for Business Combination | Roper acquired Northern Digital as an addition to its medical platform, and is reported in the Medical and Scientific Imaging segment |  |
United Controls Group, Inc Acquisition [Member] |  |  |
Fair value of assets acquired and liabilities assumed [Abstract] |  |  |
Business Acquisition, Effective Date of Acquisition | September 26, 2011 |  |
Description of Acquired Entity | a manufacturer of control systems in the oil and gas industry. |  |
Name of Acquired Entity | United Controls Group, Inc |  |
Reason for Business Combination | UCG was acquired as an addition to our existing process control systems businesses |  |
Trinity Integrated Systems, Ltd Acquisition [Member] |  |  |
Fair value of assets acquired and liabilities assumed [Abstract] |  |  |
Business Acquisition, Effective Date of Acquisition | December 1, 2011 |  |
Description of Acquired Entity | a specialist provider of requirements capture, safety lifecycle management and engineering software tools, and safety and control system solutions to the oil and gas, industrial process and control markets |  |
Name of Acquired Entity | Trinity Integrated Systems Ltd. |  |
Reason for Business Combination | Trinity was acquired as an addition to our existing process control systems businesses |  |

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- Definition Identifiable intangible asset (an asset that lacks physical substance, but not a financial asset) acquired in a business combination. Does not include goodwill. + References No definition available. + Details
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- Definition Business combinations completed during the period, number (or count) of new business entities included in the financial statements. + References No definition available. + Details
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- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d + Details
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- Definition Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 24 + Details
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- Definition With respect to a business combination completed during the period, this element provides a description of the business, other than the name, which may include the industry, size, products and other important information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph a + Details
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- Definition Month, date and year when the results of operations of the acquired entity began to be included in the income statement of the combined entity. For disclosure purposes, the effective date of an acquisition equates to the acquisition date, when acquisition date is defined as the date on which the acquirer obtained control of the acquired entity. The effective date of an acquisition may be either earlier or later than the date on which the acquisition agreement was executed (closed). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 10, 11 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 3 -Subparagraph c Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph b + Details
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- Definition The amount of acquisition cost of a business combination allocated to assets acquired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -Subparagraph g + Details
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- Definition The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 35 + Details
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- Definition The amount of acquisition cost of a business combination allocated to current assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e + Details
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- Definition The amount of acquisition cost of a business combination allocated to current liabilities of the acquired entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -Subparagraph g Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 98-1 + Details
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- Definition Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 53 -Subparagraph d + Details
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- Definition The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will not be amortized. Does not include goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -Subparagraph b + Details
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- Definition The amount of acquisition cost of a business combination allocated to noncurrent assets of the acquired entity, except for property plant and equipment, intangible assets, and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 98-1 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -Subparagraph f + Details
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- Definition The amount of acquisition cost of a business combination allocated to other noncurrent liabilities of the acquired entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e + Details
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- Definition This element represents a description of the primary reason for the business combination which may consist of general categories such as top-line growth, synergistic benefits, market share, and diversification and the more detailed factors that might apply. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph d + Details
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