Name:	r_CompensationExpensesRelatedToCashAwardsAbstract
Namespace Prefix:	r_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of expense, recognized during the period arising from market-based cash awards with employees, directors and certain consultants qualifying for treatment as employees.

+ References

No definition available.

+ Details

Name:	r_EmployeeServiceCompensationCashAwards
Namespace Prefix:	r_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Segment Performance Period

+ References

No definition available.

+ Details

Name:	r_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardSegmentPerformancePeriod
Namespace Prefix:	r_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Segments of Performance Period

+ References

No definition available.

+ Details

Name:	r_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSegmentsOfPerformancePeriod
Namespace Prefix:	r_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Potential Performance Award Percentage

+ References

No definition available.

+ Details

Name:	r_ShareBasedCompensationArrangementByShareBasedPaymentAwardPotentialPerformanceAwardPercentage
Namespace Prefix:	r_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	r_ShareBasedCompensationPlansTextualsAbstract
Namespace Prefix:	r_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cumulative average total shareholder return that the Company must achieve over a specified period in order for the awards to vest.

+ References

No definition available.

+ Details

Name:	r_ShareholdersReturnCriteriaMarketBasedCashAwards
Namespace Prefix:	r_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph g(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

-URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

No definition available.

+ Details

Name:	us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

+ References

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

+ Details

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

- Definition

The date when the equity-based award expires as specified in the award agreement, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year).

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationDating
Namespace Prefix:	us-gaap_
Data Type:	us-types:dateStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod
Namespace Prefix:	us-gaap_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

Net number of share options (or share units) granted during the period.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Share-Based Compensation Plans (Details) (USD $)	3 Months Ended		9 Months Ended
Share-Based Compensation Plans (Details) (USD $)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Y	Sep. 30, 2011
Share-based compensation expense and income tax benefits recognized during the periods
Share-based compensation expense	$ 5,101,000	$ 4,297,000	$ 14,186,000	$ 12,637,000
Income tax benefit	(1,637,000)	(1,425,000)	(4,643,000)	(4,212,000)
Share-based compensation expense, net of tax	3,464,000	2,872,000	9,543,000	8,425,000
Summary of compensation expense recognized related to cash awards
Cash awards	737,000	396,000	2,122,000	1,216,000
Share Based Compensation Plans (Textuals) [Abstract]
Stock option plan granted			460,000	710,000
Stock option plan granted, contractual term (in years)			7
Weighted-average fair value per option granted			$ 14.07	$ 12.88
Ryder's total shareholders return criteria for market based cash awards			33rd percentile of the S&P 500
Total unrecognized pre-tax compensation expense	33,600,000		33,600,000
Unrecognized Compensation Costs weighted-average period (in years)			1.9
Stock Option and Stock Purchase Plan [Member]
Share-based compensation expense and income tax benefits recognized during the periods
Share-based compensation expense	2,554,000	2,370,000	7,192,000	6,974,000
Nonvested Stock [Member]
Share-based compensation expense and income tax benefits recognized during the periods
Share-based compensation expense	$ 2,547,000	$ 1,927,000	$ 6,994,000	$ 5,663,000
Market-based restricted stock rights [Member]
Share Based Compensation Plans (Textuals) [Abstract]
Share-based compensation plan, Vesting period (in years)			3
Restricted stcok rights and restricted stock units granted			93,000	140,000
Weighted-average fair value per restricted stock right and RSU granted			$ 43.39	$ 25.37
Market Based Restricted Stock Rights, 2012 Grant [Member]
Share Based Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Segments of Performance Period			3
Market Based Restricted Stock Rights, Segment 1 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Segment Performance Period			1 year
Market Based Restricted Stock Rights, Segment 2 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Segment Performance Period			2 years
Market Based Restricted Stock Rights, Segment 3 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Segment Performance Period			3 years
Time Vested Restricted Stock [Member]
Share Based Compensation Plans (Textuals) [Abstract]
Share-based compensation plan, Vesting period (in years)			3
Restricted stcok rights and restricted stock units granted			124,000	200,000
Weighted-average fair value per restricted stock right and RSU granted			$ 52.44	$ 52.78
Stock Option [Member]
Share Based Compensation Plans (Textuals) [Abstract]
Share-based compensation plan, Vesting period (in years)			3
Minimum [Member] \| Market Based Restricted Stock Rights, 2012 Grant [Member]
Share Based Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Potential Performance Award Percentage	25.00%
Maximum [Member] \| Market Based Restricted Stock Rights, 2012 Grant [Member]
Share Based Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Potential Performance Award Percentage	125.00%