Pension and Other Postretirement Benefit Plans

6 Months Ended

Jun. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefit Plans [Text Block]

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS



	Pension						Other Postretirement
Components of Net Periodic Benefit Expense (Income)	2016			2015			2016			2015
Millions
Quarter Ended June 30,
Service Cost		$2.1			$2.5			$1.0			$1.1
Interest Cost	8.1			7.4			1.8			1.8
Expected Return on Plan Assets	(10.7		)	(10.1		)	(2.8		)	(2.8		)
Amortization of Prior Service Costs (Credits)	—			0.1			(0.8		)	(0.7		)
Amortization of Net Loss	2.5			4.5			0.1			0.1
Net Periodic Benefit Expense (Income)		$2.0			$4.4		$(0.7)			$(0.5)

Six Months Ended June 30,
Service Cost		$4.1			$5.0			$2.0			$2.2
Interest Cost	16.2			14.9			3.7			3.6
Expected Return on Plan Assets	(21.3		)	(20.3		)	(5.6		)	(5.5		)
Amortization of Prior Service Costs (Credits)	—			0.1			(1.5		)	(1.5		)
Amortization of Net Loss	4.9			9.0			0.1			0.2
Net Periodic Benefit Expense (Income)		$3.9			$8.7		$(1.3)			$(1.0)

NOTE 12. PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Continued)

Employer Contributions. For the six months ended June 30, 2016 and 2015, no contributions were made to our defined benefit pension plan; we expect to make $2.0 million in contributions to our defined benefit pension plan in 2016. For the six months ended June 30, 2016 and 2015, we made no contributions to our other postretirement benefit plan; we do not expect to make any contributions to our other postretirement benefit plan in 2016.