Employee Benefits Plans (Details 9) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Ryder Contributions	$ 8,837	$ 8,554	$ 8,406
Pension settlement (benefit) charges	(509)	12,564	2,820
Postretirement benefit (income) expense	41,704	138,656	48,118
Union-administered plans
Defined Benefit Plan Disclosure [Line Items]
Postretirement benefit (income) expense	$ 8,328	$ 21,118	11,226
Western Conference Teamsters
Defined Benefit Plan Disclosure [Line Items]
Employer Identification Number	91-6145047
Pension Protection Act Zone Status	Green	Green
FIP/RP Status Pending/ Implemented	No
Ryder Contributions	$ 2,430	$ 2,315	2,180
Surcharge Imposed	No
Expiration Date(s) of Collective-Bargaining Agreement(s)	1/12/18 to 6/30/19
IAM National
Defined Benefit Plan Disclosure [Line Items]
Employer Identification Number	51-6031295
Pension Protection Act Zone Status	Green	Green
FIP/RP Status Pending/ Implemented	No
Ryder Contributions	$ 3,801	$ 3,311	2,987
Surcharge Imposed	No
Expiration Date(s) of Collective-Bargaining Agreement(s)	3/31/16 to 9/30/19
Automobile Mechanics Local No. 701
Defined Benefit Plan Disclosure [Line Items]
Employer Identification Number	36-6042061
Pension Protection Act Zone Status	Red	Red
FIP/RP Status Pending/ Implemented	RP Adopted
Ryder Contributions	$ 1,902	$ 1,632	1,530
Surcharge Imposed	Yes
Expiration Date(s) of Collective-Bargaining Agreement(s)	5/31/16 to 10/31/17
Other funds
Defined Benefit Plan Disclosure [Line Items]
Ryder Contributions	$ 704	$ 1,296	$ 1,709