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Employee Benefit Plans - Multiemployer Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Western Conference Teamsters
Defined Benefit Plan Disclosure [Line Items]
Ryder Contributions	$ 3,971	$ 3,488	$ 3,245
IAM National
Defined Benefit Plan Disclosure [Line Items]
Ryder Contributions	4,148	3,953	3,891
Automobile Mechanics Local No. 701
Defined Benefit Plan Disclosure [Line Items]
Ryder Contributions	1,494	1,435	2,048
Other funds
Defined Benefit Plan Disclosure [Line Items]
Ryder Contributions	969	931	915
Union-administered plans
Defined Benefit Plan Disclosure [Line Items]
Ryder Contributions	10,582	9,807	10,099
Pension settlement (benefit) charges	0	(481)	5,454
Postretirement benefit income	$ 10,582	$ 9,326	$ 15,553

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- Definition

Multiemployer Plans, One Time Charge For Pension Settlement, Pre-Tax, Expense (Benefit)

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of contributions made to multiemployer plan by employer.

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