Pension and Other Postretirement Benefit Plans

9 Months Ended

Sep. 30, 2013

Pension and Other Postretirement Benefit Plans [Abstract]

Pension and Other Postretirement Benefit Plans [Text Block]

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS

	Pension						Other Postretirement
Components of Net Periodic Benefit Expense	2013			2012			2013			2012
Millions
For the Quarter Ended September 30,
Service Cost		$2.4			$2.3			$0.9			$1.0
Interest Cost	6.5			6.6			1.7			2.4
Expected Return on Plan Assets	(8.8		)	(8.9		)	(2.4		)	(2.5		)
Amortization of Prior Service Costs	0.1			—			(0.6		)	(0.4		)
Amortization of Net Loss	5.4			4.4			0.4			1.9
Net Periodic Benefit Expense		$5.6			$4.4		—				$2.4
For the Nine Months Ended September 30,
Service Cost		$7.4			$6.9			$2.9			$3.1
Interest Cost	19.5			19.8			5.1			7.1
Expected Return on Plan Assets	(26.4		)	(26.6		)	(7.3		)	(7.5		)
Amortization of Prior Service Costs	0.2			0.2			(1.9		)	(1.3		)
Amortization of Net Loss	16.1			13.1			1.2			5.7
Amortization of Transition Obligation	—			—			—			0.1
Net Periodic Benefit Expense		$16.8			$13.4		—				$7.2

Employer Contributions. For the nine months ended September 30, 2013, no contributions were made to our defined benefit pension plan (none for the nine months ended September 30, 2012). For the nine months ended September 30, 2013, we contributed $10.8 million to our other postretirement benefit plan (none for the nine months ended September 30, 2012). We do not expect to contribute to our defined benefit pension plan in 2013, and we do not expect to make any additional contributions to our other postretirement benefit plan in 2013.