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Accrued Expenses and Other Liabilities - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accrued Liabilities and Other Liabilities [Abstract]
Benefit (charge) within operating expense	$ (18)	$ (1)	$ 9

X

- Definition

Amounts charged to earnings for developments in prior years self-insurance loss reserves.

+ References

No definition available.

+ Details

Name:	r_SelfInsuranceReservesBenefitChargesToEarnings
Namespace Prefix:	r_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- References

No definition available.

+ Details

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