Goodwill and Asset Impairments (Tables)

12 Months Ended

Dec. 31, 2012

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the year ended Dec. 31, 2012 are represented in the following table:

(millions)	TPS GO		TPS SJI		Total
Balance as of Jan. 1, 2012		$3.1		$52.3		$55.4
Impairment losses, pretax		(3.1)		(12.1)		(15.2)
Goodwill written off upon sale, pretax		0.0		(40.2)		(40.2)
Balance as of Dec. 31, 2012		$0.0		$0.0		$0.0