XML 18 R70.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Segment Information (Details) | 12 Months Ended
--- | ---
Dec. 31, 2014 item | Dec. 31, 2013 | Dec. 31, 2012
Segment Information |  |  |
Number of reportable segments | 1 us-gaap_NumberOfReportableSegments |  |
Sales (as a percent) | 100.00%rs_SalesRevenueGoodsAndServicesNetPercentage | 100.00%rs_SalesRevenueGoodsAndServicesNetPercentage | 100.00%rs_SalesRevenueGoodsAndServicesNetPercentage
Carbon steel |  |  |
Segment Information |  |  |
Sales (as a percent) | 54.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_CarbonSteelMember | 53.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_CarbonSteelMember | 51.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_CarbonSteelMember
Aluminum |  |  |
Segment Information |  |  |
Sales (as a percent) | 15.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_AluminumMember | 15.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_AluminumMember | 15.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_AluminumMember
Stainless steel |  |  |
Segment Information |  |  |
Sales (as a percent) | 14.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_StainlessSteelMember | 14.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_StainlessSteelMember | 15.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_StainlessSteelMember
Alloy steel |  |  |
Segment Information |  |  |
Sales (as a percent) | 9.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_AlloySteelMember | 10.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_AlloySteelMember | 12.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_AlloySteelMember
Toll processing |  |  |
Segment Information |  |  |
Sales (as a percent) | 2.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_TollProcessingMember | 2.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_TollProcessingMember | 2.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_TollProcessingMember
Other |  |  |
Segment Information |  |  |
Sales (as a percent) | 6.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_OtherProductsOrServicesMember | 6.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_OtherProductsOrServicesMember | 5.00%rs_SalesRevenueGoodsAndServicesNetPercentage / us-gaap_ProductOrServiceAxis = rs_OtherProductsOrServicesMember

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- Definition Represents the percentage of revenue from sale of goods and services. + References No definition available. + Details
Name: | rs_SalesRevenueGoodsAndServicesNetPercentage
Namespace Prefix: | rs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ProductOrServiceAxis=rs_AlloySteelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ProductOrServiceAxis=rs_AluminumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ProductOrServiceAxis=rs_CarbonSteelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ProductOrServiceAxis=rs_OtherProductsOrServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ProductOrServiceAxis=rs_StainlessSteelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ProductOrServiceAxis=rs_TollProcessingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |