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Revenue Earning Equipment (Details Textual) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Revenue Earning Equipment (Textual) [Abstract] |  |  |
Cost | $ 9,269,518,000 | $ 8,512,030,000 |
Accumulated Depreciation | 3,514,910,000 | 3,462,359,000 |
Effect of change in estimated residual values of revenue earning equipment on pre tax earnings | 18,000,000 | 5,000,000 | 14,000,000
Assets held under capital leases [Member] |  |  |
Revenue Earning Equipment (Textual) [Abstract] |  |  |
Cost | 56,000,000 | 61,000,000 |
Accumulated Depreciation | $ 17,000,000 | $ 14,000,000 |

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- Definition The cumulative amount of depreciation (related to revenue earning equipment) that has been recognized in the income statement. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Effect of change in estimated residual values of revenue earning equipment on pre tax earnings for the periods presented. + References No definition available. + Details
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- Definition Revenue earning equipment at cost. + References No definition available. + Details
Name: | r_RevenueEarningEquipmentCost
Namespace Prefix: | r_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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