XML 47 R37.htm IDEA: XBRL DOCUMENT v3.19.1

Commitments and Contingencies - (Details)	Mar. 31, 2019
Environmental Contingencies
Ownership interest in domestic subsidiaries (as a percent)	100.00%

X

- References

No definition available.

+ Details

Name:	rs_EnvironmentalContingenciesAbstract
Namespace Prefix:	rs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	rs_MajorityInterestOwnershipPercentageByParent
Namespace Prefix:	rs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant