PENSION AND POSTRETIREMENT PLANS (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Pension | U.S.
Net periodic benefit costs
Service cost	$ 18.6	$ 17.5
Interest cost on benefit obligation	20.8	20.9
Expected return on plan assets	(40.5)	(37.4)
Recognition of net actuarial (gain) loss	9.8	7.2
Amortization of prior service cost (benefit)	(1.7)	(1.7)
Total expense (benefit)	7.0	6.5
Pension | International
Net periodic benefit costs
Service cost	8.5	7.4
Interest cost on benefit obligation	7.5	6.9
Expected return on plan assets	(16.3)	(13.5)
Recognition of net actuarial (gain) loss	4.4	4.4
Amortization of prior service cost (benefit)	(0.2)	(0.2)
Total expense (benefit)	3.9	5.0
Other Pension Plan Information
Contributions to plan	19.0
Contributions anticipated to be made during the remainder of 2018	30.0
Pension | Non-qualified plan | U.S.
Other Pension Plan Information
Contributions to plan	1.0
Contributions anticipated to be made during the remainder of 2018	5.0
Postretirement Health Care | U.S.
Net periodic benefit costs
Service cost	0.9	0.7
Interest cost on benefit obligation	1.5	1.5
Expected return on plan assets	(0.1)	(0.1)
Recognition of net actuarial (gain) loss	(0.5)	(0.6)
Amortization of prior service cost (benefit)	(4.1)	(4.2)
Total expense (benefit)	(2.3)	$ (2.7)
Other Pension Plan Information
Contributions to plan	3.0
Contributions anticipated to be made during the remainder of 2018	$ 8.0