XML 49 R10.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Goodwill | 3 Months Ended
--- | ---
Mar. 31, 2013
Goodwill. |
Goodwill | 4. Goodwill The change in the carrying amount of goodwill for the three months ended March 31, 2013 is as follows:
|  | (in millions) |
Balance as of December 31, 2012 |  | $ | 1,314.6 |
Effect of foreign currency translation |  | (2.2 | )
Balance as of March 31, 2013 |  | $ | 1,312.4 |
We had no accumulated impairment losses related to goodwill as of March 31, 2013.

X
- Details
Name: | rs_GoodwillDisclosureAbstract
Namespace Prefix: | rs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for goodwill. + References No definition available. + Details
Name: | us-gaap_GoodwillDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration