XML 17 R48.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Joint Ventures and Noncontrolling Interests (Details) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2012 item | Dec. 31, 2012 Acero Prime S. de R.L. de C.V. | Dec. 31, 2012 Oregon Feralloy Partners LLC | Dec. 31, 2012 Valex Corp. | Dec. 31, 2012 Valex Corp. People's Republic of China | Dec. 31, 2012 Valex Corp. South Korea | Dec. 31, 2012 Indiana Pickling & Processing Company | Dec. 31, 2012 Feralloy Processing Company | Jun. 30, 2011 FP Structural Solutions | Dec. 31, 2012 Minimum | Dec. 31, 2012 Maximum
Joint Ventures and Noncontrolling Interests |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investment |  | 40.00% | 40.00% |  |  |  |  |  |  | 20.00% | 50.00%
Percentage of ownership for consolidation of financial statements |  |  |  |  |  |  |  |  |  | 50.00% |
Number of joint ventures in which the entity has a noncontrolling interest | 2 |  |  |  |  |  |  |  |  |  |
Ownership percentage in investments other than equity method investment |  |  |  | 97.00% | 92.00% | 94.00% | 56.00% | 51.00% | 70.00% |  |

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

X
- Definition Represents the number of joint ventures in which the entity has a noncontrolling interest. + References No definition available. + Details
Name: | rs_NumberOfJointVentureInterestsInWhichEntityHasNoncontrollingInterest
Namespace Prefix: | rs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of ownership in another entity's common stock, held directly or indirectly by the parent, for consolidation of financial statements. + References No definition available. + Details
Name: | rs_OwnershipPercentageByParentForConsolidation
Namespace Prefix: | rs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 18 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 20 -Subparagraph a (1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant