XML 36 R26.htm IDEA: XBRL DOCUMENT v3.10.0.1

Revenues (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) item	Jun. 30, 2017 USD ($)
Revenue Disaggregation
Revenue	$ 2,988.9		$ 5,746.0
Revenue from sales of metal products (as a percent)			94.00%
Number of performance obligations from sales of metal products | item			1
Before adoption of ASU 2014-09
Revenue Disaggregation
Revenue		$ 2,475.2		$ 4,894.5
Carbon steel
Revenue Disaggregation
Revenue	1,642.2		$ 3,103.4
Carbon steel | Before adoption of ASU 2014-09
Revenue Disaggregation
Revenue		1,331.8		2,617.3
Aluminum
Revenue Disaggregation
Revenue	570.0		1,120.2
Aluminum | Before adoption of ASU 2014-09
Revenue Disaggregation
Revenue		487.8		970.9
Stainless steel
Revenue Disaggregation
Revenue	428.7		831.9
Stainless steel | Before adoption of ASU 2014-09
Revenue Disaggregation
Revenue		348.0		695.3
Alloy
Revenue Disaggregation
Revenue	172.5		341.5
Alloy | Before adoption of ASU 2014-09
Revenue Disaggregation
Revenue		145.8		291.1
Toll processing and logistics
Revenue Disaggregation
Revenue	104.3		$ 205.4
Number of days to perform services			1 day
Toll processing and logistics | Before adoption of ASU 2014-09
Revenue Disaggregation
Revenue		85.8		173.0
Other and eliminations
Revenue Disaggregation
Revenue	$ 71.2		$ 143.6
Other and eliminations | Before adoption of ASU 2014-09
Revenue Disaggregation
Revenue		$ 76.0		$ 146.9

X

- Definition

Represents the number of days to perform services.

+ References

No definition available.

+ Details

Name:	rs_NumberOfDaysToPerformServices
Namespace Prefix:	rs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of performance obligation from sale of metal products.

+ References

No definition available.

+ Details

Name:	rs_NumberOfPerformanceObligationFromSaleOfMetalProducts
Namespace Prefix:	rs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the percentage of revenue from contract with customer excluding assessed tax from sales of metal products.

+ References

No definition available.

+ Details

Name:	rs_PercentageOfRevenueFromContractWithCustomerExcludingAssessedTaxFromSalesOfMetalProducts
Namespace Prefix:	rs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 32
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis=us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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