The price per share of the conversion feature embedded in the debt instrument for the first conversion date.

No definition available.

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Namespace Prefix:	rop_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument for the fourth conversion date.

+ References

No definition available.

+ Details

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Namespace Prefix:	rop_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument for the third conversion date.

+ References

No definition available.

+ Details

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Namespace Prefix:	rop_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Fourth date established on which the debt instrument can be converted into equity, which may be presented in a variety of ways (for example, (year only, month and year, day, month and year, quarter).

+ References

No definition available.

+ Details

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Data Type:	invest:dateStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Second date established on which the debt instrument can be converted into equity, which may be presented in a variety of ways (for example, (year only, month and year, day, month and year, quarter).

+ References

No definition available.

+ Details

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Namespace Prefix:	rop_
Data Type:	invest:dateStringItemType
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Period Type:	duration

- Definition

Third date established on which the debt instrument can be converted into equity, which may be presented in a variety of ways (for example, (year only, month and year, day, month and year, quarter).

+ References

No definition available.

+ Details

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Namespace Prefix:	rop_
Data Type:	invest:dateStringItemType
Balance Type:	na
Period Type:	duration

- Definition

When presenting a range of interest payment dates, the earliest date when the interest payments are required to be paid.

+ References

No definition available.

+ Details

Name:	rop_DebtInstrumentInterestPaymentsDateRangeStart
Namespace Prefix:	rop_
Data Type:	invest:dateStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Outstanding guarantees of payment to a beneficiary, or as the source of payment for a specific transaction (for example, wiring funds to a foreign exporter if and when specified merchandise is accepted pursuant to the terms of the letter of credit).

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The minimum number of trading days within a number of consecutive trading days in a quarter that the common stock price must meet a specified threshold to trigger conversion price.

+ References

No definition available.

+ Details

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Namespace Prefix:	rop_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of consecutive trading days in a quarter that the minimum number of trading days must fall within that the common stock price has met a specified threshold to trigger conversion price.

+ References

No definition available.

+ Details

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Namespace Prefix:	rop_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of trading days used to determine the average market price of convertible subordinated notes used to calculate the contingent cash interest rate.

+ References

No definition available.

+ Details

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Data Type:	xbrli:normalizedStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of Notes issued of their principal amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	rop_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of subordinated convertible notes issued. Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

No definition available.

+ Details

Name:	rop_SeniorNotesOffering
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The contingent cash interest payable per note if the notes become convertible.

+ References

No definition available.

+ Details

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Namespace Prefix:	rop_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Describes the minimum term over which holders of subordinated convertible notes become eligible for contingent interest.

+ References

No definition available.

+ Details

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Namespace Prefix:	rop_
Data Type:	xbrli:normalizedStringItemType
Balance Type:	na
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- Definition

The issue discount rate for the issuance of subordinated convertible notes.

+ References

No definition available.

+ Details

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Namespace Prefix:	rop_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

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Data Type:	num:perShareItemType
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- Definition

Earliest date when the debt instrument can be converted into equity, in CCYY-MM-DD format.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

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Balance Type:	na
Period Type:	duration

- Definition

The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(5))

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

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a))

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

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-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(a)(2))

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

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

+ Details

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

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

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Date the credit facility first became available, in CCYY-MM-DD format.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

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

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-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_LongTermDebtByMaturityAbstract
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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20)

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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Article 5

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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- Definition

Indebtedness divided by net capital.

+ References

No definition available.

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Long-Term Debt (Details) (USD $)	12 Months Ended
Long-Term Debt (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2003	Dec. 31, 2013
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 1,500,000,000
Line of Credit Facility, Borrowing Capacity, Term	5 years
Additional borrowings available	350,000,000
Line of Credit Facility, Initiation Date	Jul. 27, 2012
Line of Credit Facility, Expiration Date	Jul. 27, 2017
Line of Credit Facility, Amount Outstanding	0us-gaap_LineOfCredit
Non-cash debt extinguishment charge		1,000,000us-gaap_ExtinguishmentOfDebtAmount
Outstanding letters of credit	48,900,000rop_LettersOfCreditOutstanding
Debt covenant compliance	3.5
Debt Instrument [Line Items]
Total Debt	2,214,123,000us-gaap_LongTermDebt			2,464,852,000us-gaap_LongTermDebt
Current Portion	11,092,000us-gaap_LongTermDebtCurrent			11,016,000us-gaap_LongTermDebtCurrent
Long-term debt, net of current portion	2,203,031,000us-gaap_LongTermDebtNoncurrent			2,453,836,000us-gaap_LongTermDebtNoncurrent
Principal amount	2,200,000us-gaap_DebtInstrumentFaceAmount
Future maturities of long term debt [Abstract]
2015	11,092,000
2016	2,332,000
2017	400,630,000
2018	800,066,000
2019	500,003,000
Thereafter	500,000,000
Total	2,214,123,000us-gaap_LongTermDebt			2,464,852,000us-gaap_LongTermDebt
Credit Facility Member 2012 [Member]
Debt Instrument [Line Items]
Principal amount	0			250,000,000
Senior Notes 2017 [Member]
Debt Instrument [Line Items]
Issuance Date	Nov. 21, 2012
Interest rate (in hundredths)	1.85%
Principal amount	400,000,000			400,000,000
Periodic interest payments	semi-annually
Periodic interest payments, start	May 15, 2013
Maturity Date	Nov. 15, 2017
Senior Notes 2018 [Member]
Debt Instrument [Line Items]
Issuance Date	Jun. 06, 2013
Interest rate (in hundredths)	2.05%
Principal amount	800,000,000			800,000,000
Periodic interest payments	semi-annually
Periodic interest payments, start	October 1, 2013
Maturity Date	Oct. 01, 2018
Senior Notes 2019 [Member]
Debt Instrument [Line Items]
Issuance Date	Nov. 21, 2012
Interest rate (in hundredths)	3.125%
Principal amount	500,000,000			500,000,000
Periodic interest payments	semi-annually
Periodic interest payments, start	May 15, 2013
Maturity Date	Nov. 15, 2022
Senior Notes 2022 [Member]
Debt Instrument [Line Items]
Issuance Date	Aug. 15, 2009
Interest rate (in hundredths)	6.25%
Principal amount	500,000,000			500,000,000
Periodic interest payments	semi-annually
Periodic interest payments, start	March 1, 2010
Maturity Date	Sep. 30, 2019
Convertible Notes [Member]
Debt Instrument [Line Items]
Interest rate (in hundredths)	3.75%
Principal issuance percentage (in hundredths)			60.498%
Principal amount	8,003,000		230,000,000	8,270,000
Capital Lease Obligations And Foreign Letter Of Credit Issuance [Member]
Debt Instrument [Line Items]
Principal amount	6,120,000			6,582,000
Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Interest rate (in hundredths)	3.75%
Principal amount	8,000,000
Maturity Date	Dec. 31, 2034
Subordinated Convertible Notes
Subordinated convertible notes, original public offering amount	230,000,000
Original issue discount (in hundredths)	60.498%
Subordinated convertible note holding period for contingent cash interest	180
Trading days the average price of subordinated convertible note must meet threshold within six months measurement period	5
Commencement date for measurement of average trading price on a subordinated convertible note	Jan. 15, 2009
Contingent cash interest payable annual rate if threshold is met (in hundredths)	0.25%
Debt Instrument Convertible Price Next Conversion Date	$ 572.76
Next conversion date	1/15/2019
Convertible notes purchase price on January 15, 2019 (third conversion date)	$ 689.68
Third conversion date	1/15/2024
Convertible notes purchase price on January 15, 2024 (fourth conversion date)	$ 830.47
Fourth conversion date	1/15/2029
Minimum number of trading days in the consecutive trading period that the common stock sale price above threshold to trigger conversion (in days)	20
Number of consecutive trading days in the preceding quarter the minimum trading days must occur in for the sale price to reach threshold to trigger conversion (in days)	30
Conversion price, end of period	$ 488.37
If converted, the value exceeding principal amount outstanding at end of period	25,000,000
If converted, issuance of common stock shares	155,980
Letters of credit [Member]
Debt Instrument [Line Items]
Principal amount	$ 49,000,000