QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

Quarterly Financial Information (Unaudited)



(Millions)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total
2013
Operating revenues	$	433.4	$	367.8	$	371.9	$	406.2	$	1,579.3
Operating income	77.4		46.9		65.2		50.5		240.0
Net income attributed to common shareholder	44.6		25.9		37.0		27.3		$	134.8

2012
Operating revenues	$	404.2	$	337.5	$	378.1	$	379.4	$	1,499.2
Operating income	72.0		41.8		64.3		46.1		224.2
Net income attributed to common shareholder	42.1		22.6		42.5		24.5		131.7

Because of various factors, the quarterly results of operations are not necessarily comparable.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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