XML 81 R62.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Summary of Significant Accounting Policies (Details) | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($)
Accounting Policies [Abstract] |
Maximum amount of insurance risk of loss retained per occurrence | $ 3,000,000

X
- Definition The maximum amount of insurance risk of loss retained on a per occurrence basis under the company's vehicle liability, workers' compensation and other insurance programs. + References No definition available. + Details
Name: | r_MaximumAmountOfInsuranceRiskOfLossRetainedPerOccurrence
Namespace Prefix: | r_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration