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Segments Of Business

12 Months Ended

Dec. 31, 2014

Segment Reporting Information [Line Items]

Segments Of Business

SEGMENTS OF BUSINESS

Alliant Energy - Alliant Energy’s principal businesses as of December 31, 2014 are:

• Utility - includes the operations of IPL and WPL, which serve customers in Iowa, Wisconsin and Minnesota. The utility business has three reportable segments: a) utility electric operations; b) utility gas operations; and c) utility other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total Utility.”

• Non-regulated, Parent and Other - includes the operations of Resources and its subsidiaries, Corporate Services, the Alliant Energy parent company, and any Alliant Energy parent company consolidating adjustments. Resources’ businesses include Transportation, Non-regulated Generation and other non-regulated investments described in Note 1(a).

Alliant Energy’s administrative support services are directly charged to the applicable segment where practicable. In all other cases, administrative support services are allocated to the applicable segment based on services agreements. Intersegment revenues were not material to Alliant Energy’s operations and there was no single customer whose revenues were 10% or more of Alliant Energy’s consolidated revenues.

Certain financial information relating to Alliant Energy’s business segments, products and services and geographic information was as follows (in millions):

	Utility																Non-Regulated,				Alliant Energy
2014	Electric				Gas				Other				Total				Parent and Other				Consolidated
Operating revenues		$2,713.6				$517.5				$66.1				$3,297.2				$53.1				$3,350.3
Depreciation and amortization	347.0				29.9				1.8				378.7				9.4				388.1
Operating income	442.4				53.8				14.0				510.2				33.4				543.6
Interest expense													176.3				4.3				180.6
Equity income from unconsolidated investments, net	(42.8		)		—				—				(42.8		)		2.4				(40.4		)
Income taxes													33.9				10.4				44.3
Net income attributable to Alliant Energy common shareowners													364.5				18.6				383.1
Total assets	9,660.4				913.5				1,016.1				11,590.0				495.9				12,085.9
Investments in equity method subsidiaries	294.3				—				—				294.3				2.3				296.6
Construction and acquisition expenditures	774.8				63.2				0.9				838.9				63.9				902.8

	Utility																Non-Regulated,				Alliant Energy
2013	Electric				Gas				Other				Total				Parent and Other				Consolidated
Operating revenues		$2,689.0				$464.8				$71.3				$3,225.1				$51.7				$3,276.8
Depreciation and amortization	333.0				28.8				1.5				363.3				7.6				370.9
Operating income	444.5				57.3				6.3				508.1				25.8				533.9
Interest expense													166.3				6.5				172.8
Equity income from unconsolidated investments, net	(43.7		)		—				—				(43.7		)		—				(43.7		)
Income taxes													49.3				4.6				53.9
Net income attributable to Alliant Energy common shareowners													349.5				8.8				358.3
Total assets	9,018.6				859.3				732.5				10,610.4				502.0				11,112.4
Investments in equity method subsidiaries	279.1				—				—				279.1				2.3				281.4
Construction and acquisition expenditures	677.3				47.0				7.3				731.6				66.7				798.3

	Utility																Non-Regulated,				Alliant Energy
2012	Electric				Gas				Other				Total				Parent and Other				Consolidated
Operating revenues		$2,589.3				$396.3				$56.7				$3,042.3				$52.2				$3,094.5
Depreciation and amortization	299.3				29.1				1.4				329.8				2.6				332.4
Operating income	426.2				51.5				7.4				485.1				34.6				519.7
Interest expense													158.7				(2.0		)		156.7
Equity (income) loss from unconsolidated investments, net	(42.1		)		—				—				(42.1		)		0.8				(41.3		)
Income taxes													74.8				14.6				89.4
Net income attributable to Alliant Energy common shareowners													300.0				19.8				319.8
Total assets	8,438.8				814.8				966.0				10,219.6				565.9				10,785.5
Investments in equity method subsidiaries	264.3				—				—				264.3				2.3				266.6
Construction and acquisition expenditures	994.0				31.4				0.1				1,025.5				132.6				1,158.1

Products and Services - Alliant Energy’s consolidated operating revenues by segment, which were substantially all related to services, were as follows:

	2014			2013			2012
Utility electric operations	81	%		82	%		84	%
Utility gas operations	15	%		14	%		13	%
Utility other	2	%		2	%		2	%
Other	2	%		2	%		1	%
	100	%		100	%		100	%

Geographic Information - At December 31, 2014, 2013 and 2012, Alliant Energy, IPL and WPL did not have any long-lived assets to be held and used in foreign countries.

IPL - IPL is a utility serving customers in Iowa and Minnesota and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to IPL’s operations and there was no single customer whose revenues were 10% or more of IPL’s consolidated revenues. Certain financial information relating to IPL’s business segments was as follows (in millions):

2014	Electric				Gas				Other				Total
Operating revenues		$1,493.3				$296.5				$58.3				$1,848.1
Depreciation and amortization	178.7				17.0				1.8				197.5
Operating income	166.8				25.7				16.7				209.2
Interest expense													89.9
Income tax benefit													(51.7		)
Earnings available for common stock													184.4
Total assets	5,398.3				544.1				519.4				6,461.8
Construction and acquisition expenditures	490.0				35.1				0.9				526.0

2013	Electric				Gas				Other				Total
Operating revenues		$1,491.8				$273.9				$53.1				$1,818.8
Depreciation and amortization	173.1				16.5				1.5				191.1
Operating income	173.1				29.8				9.1				212.0
Interest expense													81.3
Income tax benefit													(37.9		)
Earnings available for common stock													173.6
Total assets	4,905.3				518.8				381.9				5,806.0
Construction and acquisition expenditures	365.4				27.5				7.3				400.2

2012	Electric				Gas				Other				Total
Operating revenues		$1,371.1				$226.7				$52.5				$1,650.3
Depreciation and amortization	171.2				16.3				1.4				188.9
Operating income	166.2				24.2				9.9				200.3
Interest expense													78.5
Income tax benefit													(19.8		)
Earnings available for common stock													137.6
Total assets	4,500.9				479.5				476.6				5,457.0
Construction and acquisition expenditures	291.0				16.4				0.1				307.5

WPL - WPL is a utility serving customers in Wisconsin and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to WPL’s operations and there was no single customer whose revenues were 10% or more of WPL’s consolidated revenues. Certain financial information relating to WPL’s business segments was as follows (in millions):

2014	Electric				Gas				Other				Total
Operating revenues		$1,220.3				$221.0				$7.8				$1,449.1
Depreciation and amortization	168.3				12.9				—				181.2
Operating income (loss)	275.6				28.1				(2.7		)		301.0
Interest expense													86.4
Equity income from unconsolidated investments	(42.8		)		—				—				(42.8		)
Income taxes													85.6
Earnings available for common stock													180.1
Total assets	4,262.1				369.4				496.7				5,128.2
Investments in equity method subsidiaries	294.3				—				—				294.3
Construction and acquisition expenditures	284.8				28.1				—				312.9

2013	Electric				Gas				Other				Total
Operating revenues		$1,197.2				$190.9				$18.2				$1,406.3
Depreciation and amortization	159.9				12.3				—				172.2
Operating income (loss)	271.4				27.5				(2.8		)		296.1
Interest expense													85.0
Equity income from unconsolidated investments	(43.7		)		—				—				(43.7		)
Income taxes													87.2
Earnings available for common stock													175.9
Total assets	4,113.3				340.5				350.6				4,804.4
Investments in equity method subsidiaries	279.1				—				—				279.1
Construction and acquisition expenditures	311.9				19.5				—				331.4

2012	Electric				Gas				Other				Total
Operating revenues		$1,218.2				$169.6				$4.2				$1,392.0
Depreciation and amortization	128.1				12.8				—				140.9
Operating income (loss)	260.0				27.3				(2.5		)		284.8
Interest expense													80.2
Equity income from unconsolidated investments	(42.1		)		—				—				(42.1		)
Income taxes													94.6
Earnings available for common stock													162.4
Total assets	3,937.9				335.3				489.4				4,762.6
Investments in equity method subsidiaries	264.3				—				—				264.3
Construction and acquisition expenditures	703.0				15.0				—				718.0

IPL [Member]

Segment Reporting Information [Line Items]

Segments Of Business

SEGMENTS OF BUSINESS

Alliant Energy - Alliant Energy’s principal businesses as of December 31, 2014 are:

• Utility - includes the operations of IPL and WPL, which serve customers in Iowa, Wisconsin and Minnesota. The utility business has three reportable segments: a) utility electric operations; b) utility gas operations; and c) utility other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total Utility.”

• Non-regulated, Parent and Other - includes the operations of Resources and its subsidiaries, Corporate Services, the Alliant Energy parent company, and any Alliant Energy parent company consolidating adjustments. Resources’ businesses include Transportation, Non-regulated Generation and other non-regulated investments described in Note 1(a).

Alliant Energy’s administrative support services are directly charged to the applicable segment where practicable. In all other cases, administrative support services are allocated to the applicable segment based on services agreements. Intersegment revenues were not material to Alliant Energy’s operations and there was no single customer whose revenues were 10% or more of Alliant Energy’s consolidated revenues.

Certain financial information relating to Alliant Energy’s business segments, products and services and geographic information was as follows (in millions):

	Utility																Non-Regulated,				Alliant Energy
2014	Electric				Gas				Other				Total				Parent and Other				Consolidated
Operating revenues		$2,713.6				$517.5				$66.1				$3,297.2				$53.1				$3,350.3
Depreciation and amortization	347.0				29.9				1.8				378.7				9.4				388.1
Operating income	442.4				53.8				14.0				510.2				33.4				543.6
Interest expense													176.3				4.3				180.6
Equity income from unconsolidated investments, net	(42.8		)		—				—				(42.8		)		2.4				(40.4		)
Income taxes													33.9				10.4				44.3
Net income attributable to Alliant Energy common shareowners													364.5				18.6				383.1
Total assets	9,660.4				913.5				1,016.1				11,590.0				495.9				12,085.9
Investments in equity method subsidiaries	294.3				—				—				294.3				2.3				296.6
Construction and acquisition expenditures	774.8				63.2				0.9				838.9				63.9				902.8

	Utility																Non-Regulated,				Alliant Energy
2013	Electric				Gas				Other				Total				Parent and Other				Consolidated
Operating revenues		$2,689.0				$464.8				$71.3				$3,225.1				$51.7				$3,276.8
Depreciation and amortization	333.0				28.8				1.5				363.3				7.6				370.9
Operating income	444.5				57.3				6.3				508.1				25.8				533.9
Interest expense													166.3				6.5				172.8
Equity income from unconsolidated investments, net	(43.7		)		—				—				(43.7		)		—				(43.7		)
Income taxes													49.3				4.6				53.9
Net income attributable to Alliant Energy common shareowners													349.5				8.8				358.3
Total assets	9,018.6				859.3				732.5				10,610.4				502.0				11,112.4
Investments in equity method subsidiaries	279.1				—				—				279.1				2.3				281.4
Construction and acquisition expenditures	677.3				47.0				7.3				731.6				66.7				798.3

	Utility																Non-Regulated,				Alliant Energy
2012	Electric				Gas				Other				Total				Parent and Other				Consolidated
Operating revenues		$2,589.3				$396.3				$56.7				$3,042.3				$52.2				$3,094.5
Depreciation and amortization	299.3				29.1				1.4				329.8				2.6				332.4
Operating income	426.2				51.5				7.4				485.1				34.6				519.7
Interest expense													158.7				(2.0		)		156.7
Equity (income) loss from unconsolidated investments, net	(42.1		)		—				—				(42.1		)		0.8				(41.3		)
Income taxes													74.8				14.6				89.4
Net income attributable to Alliant Energy common shareowners													300.0				19.8				319.8
Total assets	8,438.8				814.8				966.0				10,219.6				565.9				10,785.5
Investments in equity method subsidiaries	264.3				—				—				264.3				2.3				266.6
Construction and acquisition expenditures	994.0				31.4				0.1				1,025.5				132.6				1,158.1

Products and Services - Alliant Energy’s consolidated operating revenues by segment, which were substantially all related to services, were as follows:

	2014			2013			2012
Utility electric operations	81	%		82	%		84	%
Utility gas operations	15	%		14	%		13	%
Utility other	2	%		2	%		2	%
Other	2	%		2	%		1	%
	100	%		100	%		100	%

Geographic Information - At December 31, 2014, 2013 and 2012, Alliant Energy, IPL and WPL did not have any long-lived assets to be held and used in foreign countries.

IPL - IPL is a utility serving customers in Iowa and Minnesota and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to IPL’s operations and there was no single customer whose revenues were 10% or more of IPL’s consolidated revenues. Certain financial information relating to IPL’s business segments was as follows (in millions):

2014	Electric				Gas				Other				Total
Operating revenues		$1,493.3				$296.5				$58.3				$1,848.1
Depreciation and amortization	178.7				17.0				1.8				197.5
Operating income	166.8				25.7				16.7				209.2
Interest expense													89.9
Income tax benefit													(51.7		)
Earnings available for common stock													184.4
Total assets	5,398.3				544.1				519.4				6,461.8
Construction and acquisition expenditures	490.0				35.1				0.9				526.0

2013	Electric				Gas				Other				Total
Operating revenues		$1,491.8				$273.9				$53.1				$1,818.8
Depreciation and amortization	173.1				16.5				1.5				191.1
Operating income	173.1				29.8				9.1				212.0
Interest expense													81.3
Income tax benefit													(37.9		)
Earnings available for common stock													173.6
Total assets	4,905.3				518.8				381.9				5,806.0
Construction and acquisition expenditures	365.4				27.5				7.3				400.2

2012	Electric				Gas				Other				Total
Operating revenues		$1,371.1				$226.7				$52.5				$1,650.3
Depreciation and amortization	171.2				16.3				1.4				188.9
Operating income	166.2				24.2				9.9				200.3
Interest expense													78.5
Income tax benefit													(19.8		)
Earnings available for common stock													137.6
Total assets	4,500.9				479.5				476.6				5,457.0
Construction and acquisition expenditures	291.0				16.4				0.1				307.5

WPL - WPL is a utility serving customers in Wisconsin and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to WPL’s operations and there was no single customer whose revenues were 10% or more of WPL’s consolidated revenues. Certain financial information relating to WPL’s business segments was as follows (in millions):

2014	Electric				Gas				Other				Total
Operating revenues		$1,220.3				$221.0				$7.8				$1,449.1
Depreciation and amortization	168.3				12.9				—				181.2
Operating income (loss)	275.6				28.1				(2.7		)		301.0
Interest expense													86.4
Equity income from unconsolidated investments	(42.8		)		—				—				(42.8		)
Income taxes													85.6
Earnings available for common stock													180.1
Total assets	4,262.1				369.4				496.7				5,128.2
Investments in equity method subsidiaries	294.3				—				—				294.3
Construction and acquisition expenditures	284.8				28.1				—				312.9

2013	Electric				Gas				Other				Total
Operating revenues		$1,197.2				$190.9				$18.2				$1,406.3
Depreciation and amortization	159.9				12.3				—				172.2
Operating income (loss)	271.4				27.5				(2.8		)		296.1
Interest expense													85.0
Equity income from unconsolidated investments	(43.7		)		—				—				(43.7		)
Income taxes													87.2
Earnings available for common stock													175.9
Total assets	4,113.3				340.5				350.6				4,804.4
Investments in equity method subsidiaries	279.1				—				—				279.1
Construction and acquisition expenditures	311.9				19.5				—				331.4

2012	Electric				Gas				Other				Total
Operating revenues		$1,218.2				$169.6				$4.2				$1,392.0
Depreciation and amortization	128.1				12.8				—				140.9
Operating income (loss)	260.0				27.3				(2.5		)		284.8
Interest expense													80.2
Equity income from unconsolidated investments	(42.1		)		—				—				(42.1		)
Income taxes													94.6
Earnings available for common stock													162.4
Total assets	3,937.9				335.3				489.4				4,762.6
Investments in equity method subsidiaries	264.3				—				—				264.3
Construction and acquisition expenditures	703.0				15.0				—				718.0

WPL [Member]

Segment Reporting Information [Line Items]

Segments Of Business

SEGMENTS OF BUSINESS

Alliant Energy - Alliant Energy’s principal businesses as of December 31, 2014 are:

• Utility - includes the operations of IPL and WPL, which serve customers in Iowa, Wisconsin and Minnesota. The utility business has three reportable segments: a) utility electric operations; b) utility gas operations; and c) utility other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total Utility.”

• Non-regulated, Parent and Other - includes the operations of Resources and its subsidiaries, Corporate Services, the Alliant Energy parent company, and any Alliant Energy parent company consolidating adjustments. Resources’ businesses include Transportation, Non-regulated Generation and other non-regulated investments described in Note 1(a).

Alliant Energy’s administrative support services are directly charged to the applicable segment where practicable. In all other cases, administrative support services are allocated to the applicable segment based on services agreements. Intersegment revenues were not material to Alliant Energy’s operations and there was no single customer whose revenues were 10% or more of Alliant Energy’s consolidated revenues.

Certain financial information relating to Alliant Energy’s business segments, products and services and geographic information was as follows (in millions):

	Utility																Non-Regulated,				Alliant Energy
2014	Electric				Gas				Other				Total				Parent and Other				Consolidated
Operating revenues		$2,713.6				$517.5				$66.1				$3,297.2				$53.1				$3,350.3
Depreciation and amortization	347.0				29.9				1.8				378.7				9.4				388.1
Operating income	442.4				53.8				14.0				510.2				33.4				543.6
Interest expense													176.3				4.3				180.6
Equity income from unconsolidated investments, net	(42.8		)		—				—				(42.8		)		2.4				(40.4		)
Income taxes													33.9				10.4				44.3
Net income attributable to Alliant Energy common shareowners													364.5				18.6				383.1
Total assets	9,660.4				913.5				1,016.1				11,590.0				495.9				12,085.9
Investments in equity method subsidiaries	294.3				—				—				294.3				2.3				296.6
Construction and acquisition expenditures	774.8				63.2				0.9				838.9				63.9				902.8

	Utility																Non-Regulated,				Alliant Energy
2013	Electric				Gas				Other				Total				Parent and Other				Consolidated
Operating revenues		$2,689.0				$464.8				$71.3				$3,225.1				$51.7				$3,276.8
Depreciation and amortization	333.0				28.8				1.5				363.3				7.6				370.9
Operating income	444.5				57.3				6.3				508.1				25.8				533.9
Interest expense													166.3				6.5				172.8
Equity income from unconsolidated investments, net	(43.7		)		—				—				(43.7		)		—				(43.7		)
Income taxes													49.3				4.6				53.9
Net income attributable to Alliant Energy common shareowners													349.5				8.8				358.3
Total assets	9,018.6				859.3				732.5				10,610.4				502.0				11,112.4
Investments in equity method subsidiaries	279.1				—				—				279.1				2.3				281.4
Construction and acquisition expenditures	677.3				47.0				7.3				731.6				66.7				798.3

	Utility																Non-Regulated,				Alliant Energy
2012	Electric				Gas				Other				Total				Parent and Other				Consolidated
Operating revenues		$2,589.3				$396.3				$56.7				$3,042.3				$52.2				$3,094.5
Depreciation and amortization	299.3				29.1				1.4				329.8				2.6				332.4
Operating income	426.2				51.5				7.4				485.1				34.6				519.7
Interest expense													158.7				(2.0		)		156.7
Equity (income) loss from unconsolidated investments, net	(42.1		)		—				—				(42.1		)		0.8				(41.3		)
Income taxes													74.8				14.6				89.4
Net income attributable to Alliant Energy common shareowners													300.0				19.8				319.8
Total assets	8,438.8				814.8				966.0				10,219.6				565.9				10,785.5
Investments in equity method subsidiaries	264.3				—				—				264.3				2.3				266.6
Construction and acquisition expenditures	994.0				31.4				0.1				1,025.5				132.6				1,158.1

Products and Services - Alliant Energy’s consolidated operating revenues by segment, which were substantially all related to services, were as follows:

	2014			2013			2012
Utility electric operations	81	%		82	%		84	%
Utility gas operations	15	%		14	%		13	%
Utility other	2	%		2	%		2	%
Other	2	%		2	%		1	%
	100	%		100	%		100	%

Geographic Information - At December 31, 2014, 2013 and 2012, Alliant Energy, IPL and WPL did not have any long-lived assets to be held and used in foreign countries.

IPL - IPL is a utility serving customers in Iowa and Minnesota and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes steam operations and the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to IPL’s operations and there was no single customer whose revenues were 10% or more of IPL’s consolidated revenues. Certain financial information relating to IPL’s business segments was as follows (in millions):

2014	Electric				Gas				Other				Total
Operating revenues		$1,493.3				$296.5				$58.3				$1,848.1
Depreciation and amortization	178.7				17.0				1.8				197.5
Operating income	166.8				25.7				16.7				209.2
Interest expense													89.9
Income tax benefit													(51.7		)
Earnings available for common stock													184.4
Total assets	5,398.3				544.1				519.4				6,461.8
Construction and acquisition expenditures	490.0				35.1				0.9				526.0

2013	Electric				Gas				Other				Total
Operating revenues		$1,491.8				$273.9				$53.1				$1,818.8
Depreciation and amortization	173.1				16.5				1.5				191.1
Operating income	173.1				29.8				9.1				212.0
Interest expense													81.3
Income tax benefit													(37.9		)
Earnings available for common stock													173.6
Total assets	4,905.3				518.8				381.9				5,806.0
Construction and acquisition expenditures	365.4				27.5				7.3				400.2

2012	Electric				Gas				Other				Total
Operating revenues		$1,371.1				$226.7				$52.5				$1,650.3
Depreciation and amortization	171.2				16.3				1.4				188.9
Operating income	166.2				24.2				9.9				200.3
Interest expense													78.5
Income tax benefit													(19.8		)
Earnings available for common stock													137.6
Total assets	4,500.9				479.5				476.6				5,457.0
Construction and acquisition expenditures	291.0				16.4				0.1				307.5

WPL - WPL is a utility serving customers in Wisconsin and includes three reportable segments: a) electric operations; b) gas operations; and c) other, which includes the unallocated portions of the utility business. Various line items in the following tables are not allocated to the electric and gas segments for management reporting purposes, and therefore, are included only in “Total.” Intersegment revenues were not material to WPL’s operations and there was no single customer whose revenues were 10% or more of WPL’s consolidated revenues. Certain financial information relating to WPL’s business segments was as follows (in millions):

2014	Electric				Gas				Other				Total
Operating revenues		$1,220.3				$221.0				$7.8				$1,449.1
Depreciation and amortization	168.3				12.9				—				181.2
Operating income (loss)	275.6				28.1				(2.7		)		301.0
Interest expense													86.4
Equity income from unconsolidated investments	(42.8		)		—				—				(42.8		)
Income taxes													85.6
Earnings available for common stock													180.1
Total assets	4,262.1				369.4				496.7				5,128.2
Investments in equity method subsidiaries	294.3				—				—				294.3
Construction and acquisition expenditures	284.8				28.1				—				312.9

2013	Electric				Gas				Other				Total
Operating revenues		$1,197.2				$190.9				$18.2				$1,406.3
Depreciation and amortization	159.9				12.3				—				172.2
Operating income (loss)	271.4				27.5				(2.8		)		296.1
Interest expense													85.0
Equity income from unconsolidated investments	(43.7		)		—				—				(43.7		)
Income taxes													87.2
Earnings available for common stock													175.9
Total assets	4,113.3				340.5				350.6				4,804.4
Investments in equity method subsidiaries	279.1				—				—				279.1
Construction and acquisition expenditures	311.9				19.5				—				331.4

2012	Electric				Gas				Other				Total
Operating revenues		$1,218.2				$169.6				$4.2				$1,392.0
Depreciation and amortization	128.1				12.8				—				140.9
Operating income (loss)	260.0				27.3				(2.5		)		284.8
Interest expense													80.2
Equity income from unconsolidated investments	(42.1		)		—				—				(42.1		)
Income taxes													94.6
Earnings available for common stock													162.4
Total assets	3,937.9				335.3				489.4				4,762.6
Investments in equity method subsidiaries	264.3				—				—				264.3
Construction and acquisition expenditures	703.0				15.0				—				718.0

X

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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