POSTRETIREMENT BENEFIT PLANS (Tables)

9 Months Ended

Sep. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Net Periodic Benefit Cost of Pension Plans and Other Employee Related Benefit Plans

The following tables provide the components of net periodic benefit cost for pension plans and other employee-related benefit plans for the three and nine months ended September 30, 2015 and 2014.

	2015												2014
Three Months Ended September 30	Pension				Other Benefits				Total				Pension				Other Benefits				Total
Service cost		$	1.4			$	0.3			$	1.7			$	1.2			$	0.5			$	1.7
Interest cost		3.6				1.4				5.0				3.9				2.0				5.9
Expected return on plan assets		(5.1		)		(0.2		)		(5.3		)		(5.1		)		(0.2		)		(5.3		)
Amortization of prior service cost (benefit)		0.2				(2.8		)		(2.6		)		0.1				(1.5		)		(1.4		)
Amortization of net actuarial loss		2.2				1.3				3.5				1.6				0.8				2.4
Total net periodic benefit cost		$	2.3			$	—			$	2.3			$	1.7			$	1.6			$	3.3
	2015												2014
Nine Months Ended September 30	Pension				Other Benefits				Total				Pension				Other Benefits				Total
Service cost		$	4.0			$	0.7			$	4.7			$	3.7			$	1.4			$	5.1
Interest cost		10.7				3.8				14.5				11.7				5.9				17.6
Expected return on plan assets		(15.3		)		(0.6		)		(15.9		)		(15.5		)		(0.5		)		(16.0		)
Amortization of prior service cost (benefit)		0.7				(8.3		)		(7.6		)		0.5				(4.5		)		(4.0		)
Amortization of net actuarial loss		6.5				3.5				10.0				4.7				2.3				7.0
Total net periodic benefit cost		$	6.6			$	(0.9	)		$	5.7			$	5.1			$	4.6			$	9.7