XML 46 R22.htm IDEA: XBRL DOCUMENT v2.3.0.15

Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2011

Notes to Financial Statements [Abstract]

Stock Based Compensation Expense

The following table provides information regarding the Company's stock based compensation expense (in thousands):

	Three months ended September 30,		Nine months ended  September 30,
	2011	2010	2011	2010
Stock based compensation	$  7,660	$  6,280	$  23,466	$  19,384
Tax effect recognized in net income	2,681	2,198	8,216	6,789
Windfall tax benefit, net	372	1,369	3,999	4,241

Weighted average assumptions used to value option grants

	Nine months ended September 30,
	2011		2010
Fair value per share ($)	24.45		16.93
Risk-free interest rate (%)	1.91		2.34
Expected option life (years)	5.34		5.38
Expected volatility (%)	35.26		34.54
Expected dividend yield (%)	0.60		0.72

X

- Definition

Disclosure of compensation-related costs for share-based compensation which may include disclosure of policies, compensation plan details, allocation of stock compensation, incentive distributions, share-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ Details

Name:	rop_DisclosureOfCompensationRelatedCostShareBasedPaymentsTextBlock
Namespace Prefix:	rop
Data Type:	us-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	rop_NotesToFinancialStatementsAbstract
Namespace Prefix:	rop
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This table provides the weighted average assumptions used to estimate the fair value of options granted during the current and prior periods using the Black-Scholes Option pricing model.

+ Details

Name:	rop_ScheduleOfWeightedAverageAssumptionsUsedToValueOptionsTextBlock
Namespace Prefix:	rop
Data Type:	us-types:textBlockItemType
Balance Type:	na
Period Type:	duration