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Inventories | 12 Months Ended
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Dec. 31, 2011
Inventories [Abstract] |
Inventories [Text Block] |
(3) | Inventories
The components of inventories at December 31 were as follows (in thousands):
|  | 2011 |  | 2010 |
Raw materials and supplies |  | $ | 119,550 |  | $ | 113,415 |
Work in process |  |  | 31,085 |  |  | 26,358 |
Finished products |  |  | 89,334 |  |  | 71,302 |
Inventory reserves |  |  | (35,211 | ) |  | (32,516 | )
|  | $ | 204,758 |  | $ | 178,559 |

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- Definition This element represents the complete disclosure related to inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income. + References No definition available. + Details
Name: | rop_ComponentsOfInventoryTextBlock
Namespace Prefix: | rop_
Data Type: | us-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | rop_InventoriesAbstract
Namespace Prefix: | rop_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration