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Environmental Matters - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) DisposalSite	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Environmental Remediation Obligations [Abstract]
Number of disposal sites | DisposalSite	21
Environmental expenses	$ 16	$ 12	$ 12
Environmental liabilities	12	10
Asset retirement obligations	$ 28	$ 27

X

- Definition

Carrying value of the obligation (known or estimated) related to remediation costs as well as normal recurring expenses such as licensing, testing and waste disposal fees.

+ References

No definition available.

+ Details

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X

- Definition

The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities. Also includes normal recurring expenses such as licensing, testing and waste disposal fees.

+ References

No definition available.

+ Details

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Namespace Prefix:	r_
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Balance Type:	debit
Period Type:	duration

X

- Definition

Number of disposal sites.

+ References

No definition available.

+ Details

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X

- Definition

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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- References

No definition available.

+ Details

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