Additional Balance Sheet & Operational Information (Tables)

12 Months Ended

Dec. 31, 2011

Additional Balance Sheet and Operational Information [Abstract]

Summary of inventories

Inventories consist of the following:

	At December 31,
(In millions)	2011		2010
Gas in storage - at LIFO cost	$	31.8	$	26.2
Gas in storage - at average cost		-		23.6
Total Gas in storage		31.8		49.8
Coal & Oil for electric generation - at average cost		60.6		70.1
Materials & supplies		54.9		48.8
Nonutility Coal - at LIFO cost		13.0		16.2
Other		1.6		2.2
Total inventories	$	161.9	$	187.1

Summary of prepayments and other current assets

Prepayments & other current assets in the Consolidated Balance Sheets consist of the following:

	At December 31,
(In millions)	2011		2010
Prepaid gas delivery service	$	42.4	$	40.7
Deferred income taxes		16.0		3.8
Prepaid taxes		5.1		31.5
Other prepayments & current assets		20.8		25.2
Total prepayments & other current assets	$	84.3	$	101.2

Schedule of investments in unconsolidated affiliates

Investments in unconsolidated affiliates consist of the following:

	At December 31,
(In millions)	2011		2010
ProLiance Holdings, LLC	$	85.4	$	123.2
Haddington Energy Partnerships		3.4		3.4
Other non-utility partnerships & corporations		3.9		8.4
Other utility investments		0.2		0.2
Total investments in unconsolidated affiliates	$	92.9	$	135.2

Other utility and corporate investments in the consolidated balance sheets

Other utility & corporate Investments in the Consolidated Balance Sheets consist of the following:

	At December 31,
(In millions)	2011		2010
Cash surrender value of life insurance policies	$	27.3	$	27.5
Municipal bond		3.9		4.1
Restricted cash		1.9		1.2
Other investments		1.3		1.3
Other utility & corporate investments	$	34.4	$	34.1

Goodwill by operating segment

Goodwill by operating segment follows:

	At December 31,
(In millions)	2011		2010
Utility Group
Gas Utility Services	$	205.0	$	205.0
Nonutility Group
Infrastructure Services		55.2		34.9
Energy Services		2.1		2.1
Consolidated goodwill	$	262.3	$	242.0

Accrued Liabilities

Accrued liabilities in the Consolidated Balance Sheets consist of the following:

	At December 31,
(In millions)	2011		2010
Refunds to customers & customer deposits	$	56.4	$	54.8
Accrued taxes		33.5		40.9
Accrued interest		21.7		23.8
Accrued retirement		6.5		5.8
Accrued salaries & other		63.0		53.1
Total accrued liabilities	$	181.1	$	178.4

Asset retirement obligation

Asset retirement obligations included in the Consolidated Balance Sheets roll forward as follows:

(In millions)	2011		2010
Asset retirement obligation, January 1	$	38.7	$	36.1
Accretion		2.5		2.1
Increases in estimates, net of cash payments		2.5		0.5
Asset retirement obligation, December 31		43.7		38.7
Accrued liabilities	$	0.2	$	0.3
Deferred credits & other liabilities	$	43.5	$	38.4

Equity in earnings (losses) of unconsolidated affiliates

Equity in earnings (losses) of unconsolidated affiliates consists of the following:

	Year Ended December 31,
(In millions)	2011			2010			2009
ProLiance Holdings, LLC	$	(28.6	)	$	(2.5	)	$	3.6
Haddington Energy Partners, LP		-			(6.1	)		0.9
Other		(3.4	)		-			(1.1	)
Total equity in earnings (losses) of unconsolidated affiliates	$	(32.0	)	$	(8.6	)	$	3.4

Other, net in the consolidated statements of income

Other income (expense) - net in the Consolidated Statements of Income consists of the following:

	Year Ended December 31,
(In millions)	2011			2010			2009
AFUDC - borrowed funds	$	2.5		$	1.4		$	1.3
AFUDC - equity funds		0.2			0.3			0.7
Nonutility plant capitalized interest		2.1			2.1			6.0
Interest income, net		1.4			1.7			1.4
Other nonutility investment impairment charges		(9.9	)		(4.7	)		-
Cash surrender value of life insurance policies		0.1			1.9			4.1
All other income		0.1			2.1			0.2
Total other income (expense) - net	$	(3.5	)	$	4.8		$	13.7

Supplemental cash flow information

Supplemental Cash Flow Information:

	Year Ended December 31,
(In millions)	2011			2010		2009
Cash paid (received) for:
Interest	$	108.6		$	104.5	$	95.5
Income taxes		(9.0	)		8.1		(12.2	)