Acquisitions - Consideration (Details) € in Millions, $ in Millions	Oct. 30, 2015 USD ($)	Jun. 08, 2015 USD ($)	Jun. 08, 2015 EUR (€)
Con-Way
Business Acquisition [Line Items]
Cash consideration	$ 2,706.6
Liability for performance share settlement	30.9
Portion of replacement equity awards attributable to pre-acquisition service	17.6
Cash acquired	(437.3)
Total consideration	$ 2,317.8
ND
Business Acquisition [Line Items]
Cash consideration		$ 1,603.9	€ 1,437.0
Liability for performance share settlement		13.2	11.8
Repayment of indebtedness		705.0	628.5
Noncontrolling interests		784.2	702.5
Cash acquired		(151.0)	(134.6)
Total consideration		$ 2,955.3	€ 2,645.2