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Segments Of Business | 12 Months Ended
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Dec. 31, 2013
Segment Reporting Information [Line Items] |
Segments Of Business | SEGMENTS OF BUSINESS Alliant Energy - Alliant Energy’s principal businesses as of December 31, 2013 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
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, net of AFUDC |  |  |  |  |  |  | 135.5 |  |  | 6.5 |  |  | 142.0 |
Equity income from unconsolidated investments, net | (43.7 | ) |  | — |  |  | — |  |  | (43.7 | ) |  | — |  |  | (43.7 | )
Interest income and other |  |  |  |  |  |  | (0.4 | ) |  | — |  |  | (0.4 | )
Income taxes |  |  |  |  |  |  | 49.3 |  |  | 4.6 |  |  | 53.9 |
Income from continuing operations, net of tax |  |  |  |  |  |  | 367.4 |  |  | 14.7 |  |  | 382.1 |
Loss from discontinued operations, net of tax |  |  |  |  |  |  | — |  |  | (5.9 | ) |  | (5.9 | )
Net income |  |  |  |  |  |  | 367.4 |  |  | 8.8 |  |  | 376.2 |
Preferred dividends |  |  |  |  |  |  | 17.9 |  |  | — |  |  | 17.9 |
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, net of AFUDC |  |  |  |  |  |  | 136.8 |  |  | (2.0 | ) |  | 134.8 |
Equity (income) loss from unconsolidated investments, net | (42.1 | ) |  | — |  |  | — |  |  | (42.1 | ) |  | 0.8 |  |  | (41.3 | )
Interest income and other |  |  |  |  |  |  | (0.3 | ) |  | (3.7 | ) |  | (4.0 | )
Income taxes |  |  |  |  |  |  | 74.8 |  |  | 14.6 |  |  | 89.4 |
Income from continuing operations, net of tax |  |  |  |  |  |  | 315.9 |  |  | 24.9 |  |  | 340.8 |
Loss from discontinued operations, net of tax |  |  |  |  |  |  | — |  |  | (5.1 | ) |  | (5.1 | )
Net income |  |  |  |  |  |  | 315.9 |  |  | 19.8 |  |  | 335.7 |
Preferred dividends |  |  |  |  |  |  | 15.9 |  |  | — |  |  | 15.9 |
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 |
| Utility |  | Non-Regulated, |  | Alliant Energy
2011 | Electric |  | Gas |  | Other |  | Total |  | Parent and Other |  | Consolidated
Operating revenues |  | $2,635.8 |  |  |  | $476.7 |  |  |  | $62.0 |  |  |  | $3,174.5 |  |  |  | $46.9 |  |  |  | $3,221.4 |
Depreciation and amortization | 289.0 |  |  | 28.4 |  |  | 1.8 |  |  | 319.2 |  |  | 1.8 |  |  | 321.0 |
Operating income (loss) | 444.2 |  |  | 47.8 |  |  | (3.2 | ) |  | 488.8 |  |  | 24.5 |  |  | 513.3 |
Interest expense, net of AFUDC |  |  |  |  |  |  | 146.6 |  |  | (0.3 | ) |  | 146.3 |
Equity income from unconsolidated investments, net | (38.7 | ) |  | — |  |  | — |  |  | (38.7 | ) |  | (0.6 | ) |  | (39.3 | )
Interest income and other |  |  |  |  |  |  | (0.2 | ) |  | (4.1 | ) |  | (4.3 | )
Income tax expense (benefit) |  |  |  |  |  |  | 78.3 |  |  | (9.1 | ) |  | 69.2 |
Income from continuing operations, net of tax |  |  |  |  |  |  | 302.8 |  |  | 38.6 |  |  | 341.4 |
Loss from discontinued operations, net of tax |  |  |  |  |  |  | — |  |  | (19.5 | ) |  | (19.5 | )
Net income |  |  |  |  |  |  | 302.8 |  |  | 19.1 |  |  | 321.9 |
Preferred dividends |  |  |  |  |  |  | 18.3 |  |  | — |  |  | 18.3 |
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 284.5 |  |  | 19.1 |  |  | 303.6 |
Total assets | 7,524.5 |  |  | 831.9 |  |  | 781.1 |  |  | 9,137.5 |  |  | 550.4 |  |  | 9,687.9 |
Investments in equity method subsidiaries | 246.5 |  |  | — |  |  | — |  |  | 246.5 |  |  | 3.1 |  |  | 249.6 |
Construction and acquisition expenditures | 542.7 |  |  | 38.0 |  |  | 27.4 |  |  | 608.1 |  |  | 65.3 |  |  | 673.4 |
Products and Services - Alliant Energy’s consolidated operating revenues by segment were as follows:
| 2013 |  | 2012 |  | 2011
Utility electric operations | 82 | % |  | 84 | % |  | 82 | %
Utility gas operations | 14 | % |  | 13 | % |  | 15 | %
Utility other | 2 | % |  | 2 | % |  | 2 | %
Other | 2 | % |  | 1 | % |  | 1 | %
| 100 | % |  | 100 | % |  | 100 | %
Geographic Information - At December 31, 2013, 2012 and 2011, 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):
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, net of AFUDC |  |  |  |  |  |  | 60.3 |
Interest income and other |  |  |  |  |  |  | (0.3 | )
Income tax benefit |  |  |  |  |  |  | (37.9 | )
Net income |  |  |  |  |  |  | 189.9 |
Preferred dividends |  |  |  |  |  |  | 16.3 |
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, net of AFUDC |  |  |  |  |  |  | 70.1 |
Interest income and other |  |  |  |  |  |  | (0.2 | )
Income tax benefit |  |  |  |  |  |  | (19.8 | )
Net income |  |  |  |  |  |  | 150.2 |
Preferred dividends |  |  |  |  |  |  | 12.6 |
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 |
2011 | Electric |  | Gas |  | Other |  | Total
Operating revenues |  | $1,408.3 |  |  |  | $276.3 |  |  |  | $55.5 |  |  |  | $1,740.1 |
Depreciation and amortization | 161.3 |  |  | 16.0 |  |  | 1.8 |  |  | 179.1 |
Operating income | 181.6 |  |  | 20.6 |  |  | 6.2 |  |  | 208.4 |
Interest expense, net of AFUDC |  |  |  |  |  |  | 72.9 |
Interest income and other |  |  |  |  |  |  | (0.2 | )
Income tax benefit |  |  |  |  |  |  | (3.6 | )
Net income |  |  |  |  |  |  | 139.3 |
Preferred dividends |  |  |  |  |  |  | 15.0 |
Earnings available for common stock |  |  |  |  |  |  | 124.3 |
Total assets | 4,208.2 |  |  | 471.1 |  |  | 414.2 |  |  | 5,093.5 |
Construction and acquisition expenditures | 245.6 |  |  | 21.2 |  |  | 26.9 |  |  | 293.7 |
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):
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, net of AFUDC |  |  |  |  |  |  | 75.2 |
Equity income from unconsolidated investments | (43.7 | ) |  | — |  |  | — |  |  | (43.7 | )
Interest income and other |  |  |  |  |  |  | (0.1 | )
Income taxes |  |  |  |  |  |  | 87.2 |
Net income |  |  |  |  |  |  | 177.5 |
Preferred dividends |  |  |  |  |  |  | 1.6 |
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, net of AFUDC |  |  |  |  |  |  | 66.7 |
Equity income from unconsolidated investments | (42.1) |  | — |  | — |  |  | (42.1 | )
Interest income and other |  |  |  |  |  |  | (0.1 | )
Income taxes |  |  |  |  |  |  | 94.6 |
Net income |  |  |  |  |  |  | 165.7 |
Preferred dividends |  |  |  |  |  |  | 3.3 |
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 |
2011 | Electric |  | Gas |  | Other |  | Total
Operating revenues | $1,227.5 |  |  | $200.4 |  |  |  | $6.5 |  |  |  | $1,434.4 |
Depreciation and amortization | 127.7 |  | 12.4 |  |  | — |  |  | 140.1 |
Operating income (loss) | 262.6 |  | 27.2 |  |  | (9.4 | ) |  | 280.4 |
Interest expense, net of AFUDC |  |  |  |  |  |  | 73.7 |
Equity income from unconsolidated investments | (38.7) |  | — |  |  | — |  |  | (38.7 | )
Income taxes |  |  |  |  |  |  | 81.9 |
Net income |  |  |  |  |  |  | 163.5 |
Preferred dividends |  |  |  |  |  |  | 3.3 |
Earnings available for common stock |  |  |  |  |  |  | 160.2 |
Total assets | 3,316.3 |  | 360.8 |  |  | 366.9 |  |  | 4,044.0 |
Investments in equity method subsidiaries | 246.5 |  | — |  |  | — |  |  | 246.5 |
Construction and acquisition expenditures | 297.1 |  | 16.8 |  |  | 0.5 |  |  | 314.4 |
IPL [Member] |
Segment Reporting Information [Line Items] |
Segments Of Business | SEGMENTS OF BUSINESS Alliant Energy - Alliant Energy’s principal businesses as of December 31, 2013 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
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, net of AFUDC |  |  |  |  |  |  | 135.5 |  |  | 6.5 |  |  | 142.0 |
Equity income from unconsolidated investments, net | (43.7 | ) |  | — |  |  | — |  |  | (43.7 | ) |  | — |  |  | (43.7 | )
Interest income and other |  |  |  |  |  |  | (0.4 | ) |  | — |  |  | (0.4 | )
Income taxes |  |  |  |  |  |  | 49.3 |  |  | 4.6 |  |  | 53.9 |
Income from continuing operations, net of tax |  |  |  |  |  |  | 367.4 |  |  | 14.7 |  |  | 382.1 |
Loss from discontinued operations, net of tax |  |  |  |  |  |  | — |  |  | (5.9 | ) |  | (5.9 | )
Net income |  |  |  |  |  |  | 367.4 |  |  | 8.8 |  |  | 376.2 |
Preferred dividends |  |  |  |  |  |  | 17.9 |  |  | — |  |  | 17.9 |
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, net of AFUDC |  |  |  |  |  |  | 136.8 |  |  | (2.0 | ) |  | 134.8 |
Equity (income) loss from unconsolidated investments, net | (42.1 | ) |  | — |  |  | — |  |  | (42.1 | ) |  | 0.8 |  |  | (41.3 | )
Interest income and other |  |  |  |  |  |  | (0.3 | ) |  | (3.7 | ) |  | (4.0 | )
Income taxes |  |  |  |  |  |  | 74.8 |  |  | 14.6 |  |  | 89.4 |
Income from continuing operations, net of tax |  |  |  |  |  |  | 315.9 |  |  | 24.9 |  |  | 340.8 |
Loss from discontinued operations, net of tax |  |  |  |  |  |  | — |  |  | (5.1 | ) |  | (5.1 | )
Net income |  |  |  |  |  |  | 315.9 |  |  | 19.8 |  |  | 335.7 |
Preferred dividends |  |  |  |  |  |  | 15.9 |  |  | — |  |  | 15.9 |
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 |
| Utility |  | Non-Regulated, |  | Alliant Energy
2011 | Electric |  | Gas |  | Other |  | Total |  | Parent and Other |  | Consolidated
Operating revenues |  | $2,635.8 |  |  |  | $476.7 |  |  |  | $62.0 |  |  |  | $3,174.5 |  |  |  | $46.9 |  |  |  | $3,221.4 |
Depreciation and amortization | 289.0 |  |  | 28.4 |  |  | 1.8 |  |  | 319.2 |  |  | 1.8 |  |  | 321.0 |
Operating income (loss) | 444.2 |  |  | 47.8 |  |  | (3.2 | ) |  | 488.8 |  |  | 24.5 |  |  | 513.3 |
Interest expense, net of AFUDC |  |  |  |  |  |  | 146.6 |  |  | (0.3 | ) |  | 146.3 |
Equity income from unconsolidated investments, net | (38.7 | ) |  | — |  |  | — |  |  | (38.7 | ) |  | (0.6 | ) |  | (39.3 | )
Interest income and other |  |  |  |  |  |  | (0.2 | ) |  | (4.1 | ) |  | (4.3 | )
Income tax expense (benefit) |  |  |  |  |  |  | 78.3 |  |  | (9.1 | ) |  | 69.2 |
Income from continuing operations, net of tax |  |  |  |  |  |  | 302.8 |  |  | 38.6 |  |  | 341.4 |
Loss from discontinued operations, net of tax |  |  |  |  |  |  | — |  |  | (19.5 | ) |  | (19.5 | )
Net income |  |  |  |  |  |  | 302.8 |  |  | 19.1 |  |  | 321.9 |
Preferred dividends |  |  |  |  |  |  | 18.3 |  |  | — |  |  | 18.3 |
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 284.5 |  |  | 19.1 |  |  | 303.6 |
Total assets | 7,524.5 |  |  | 831.9 |  |  | 781.1 |  |  | 9,137.5 |  |  | 550.4 |  |  | 9,687.9 |
Investments in equity method subsidiaries | 246.5 |  |  | — |  |  | — |  |  | 246.5 |  |  | 3.1 |  |  | 249.6 |
Construction and acquisition expenditures | 542.7 |  |  | 38.0 |  |  | 27.4 |  |  | 608.1 |  |  | 65.3 |  |  | 673.4 |
Products and Services - Alliant Energy’s consolidated operating revenues by segment were as follows:
| 2013 |  | 2012 |  | 2011
Utility electric operations | 82 | % |  | 84 | % |  | 82 | %
Utility gas operations | 14 | % |  | 13 | % |  | 15 | %
Utility other | 2 | % |  | 2 | % |  | 2 | %
Other | 2 | % |  | 1 | % |  | 1 | %
| 100 | % |  | 100 | % |  | 100 | %
Geographic Information - At December 31, 2013, 2012 and 2011, 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):
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, net of AFUDC |  |  |  |  |  |  | 60.3 |
Interest income and other |  |  |  |  |  |  | (0.3 | )
Income tax benefit |  |  |  |  |  |  | (37.9 | )
Net income |  |  |  |  |  |  | 189.9 |
Preferred dividends |  |  |  |  |  |  | 16.3 |
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, net of AFUDC |  |  |  |  |  |  | 70.1 |
Interest income and other |  |  |  |  |  |  | (0.2 | )
Income tax benefit |  |  |  |  |  |  | (19.8 | )
Net income |  |  |  |  |  |  | 150.2 |
Preferred dividends |  |  |  |  |  |  | 12.6 |
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 |
2011 | Electric |  | Gas |  | Other |  | Total
Operating revenues |  | $1,408.3 |  |  |  | $276.3 |  |  |  | $55.5 |  |  |  | $1,740.1 |
Depreciation and amortization | 161.3 |  |  | 16.0 |  |  | 1.8 |  |  | 179.1 |
Operating income | 181.6 |  |  | 20.6 |  |  | 6.2 |  |  | 208.4 |
Interest expense, net of AFUDC |  |  |  |  |  |  | 72.9 |
Interest income and other |  |  |  |  |  |  | (0.2 | )
Income tax benefit |  |  |  |  |  |  | (3.6 | )
Net income |  |  |  |  |  |  | 139.3 |
Preferred dividends |  |  |  |  |  |  | 15.0 |
Earnings available for common stock |  |  |  |  |  |  | 124.3 |
Total assets | 4,208.2 |  |  | 471.1 |  |  | 414.2 |  |  | 5,093.5 |
Construction and acquisition expenditures | 245.6 |  |  | 21.2 |  |  | 26.9 |  |  | 293.7 |
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):
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, net of AFUDC |  |  |  |  |  |  | 75.2 |
Equity income from unconsolidated investments | (43.7 | ) |  | — |  |  | — |  |  | (43.7 | )
Interest income and other |  |  |  |  |  |  | (0.1 | )
Income taxes |  |  |  |  |  |  | 87.2 |
Net income |  |  |  |  |  |  | 177.5 |
Preferred dividends |  |  |  |  |  |  | 1.6 |
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, net of AFUDC |  |  |  |  |  |  | 66.7 |
Equity income from unconsolidated investments | (42.1) |  | — |  | — |  |  | (42.1 | )
Interest income and other |  |  |  |  |  |  | (0.1 | )
Income taxes |  |  |  |  |  |  | 94.6 |
Net income |  |  |  |  |  |  | 165.7 |
Preferred dividends |  |  |  |  |  |  | 3.3 |
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 |
2011 | Electric |  | Gas |  | Other |  | Total
Operating revenues | $1,227.5 |  |  | $200.4 |  |  |  | $6.5 |  |  |  | $1,434.4 |
Depreciation and amortization | 127.7 |  | 12.4 |  |  | — |  |  | 140.1 |
Operating income (loss) | 262.6 |  | 27.2 |  |  | (9.4 | ) |  | 280.4 |
Interest expense, net of AFUDC |  |  |  |  |  |  | 73.7 |
Equity income from unconsolidated investments | (38.7) |  | — |  |  | — |  |  | (38.7 | )
Income taxes |  |  |  |  |  |  | 81.9 |
Net income |  |  |  |  |  |  | 163.5 |
Preferred dividends |  |  |  |  |  |  | 3.3 |
Earnings available for common stock |  |  |  |  |  |  | 160.2 |
Total assets | 3,316.3 |  | 360.8 |  |  | 366.9 |  |  | 4,044.0 |
Investments in equity method subsidiaries | 246.5 |  | — |  |  | — |  |  | 246.5 |
Construction and acquisition expenditures | 297.1 |  | 16.8 |  |  | 0.5 |  |  | 314.4 |
WPL [Member] |
Segment Reporting Information [Line Items] |
Segments Of Business | SEGMENTS OF BUSINESS Alliant Energy - Alliant Energy’s principal businesses as of December 31, 2013 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
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, net of AFUDC |  |  |  |  |  |  | 135.5 |  |  | 6.5 |  |  | 142.0 |
Equity income from unconsolidated investments, net | (43.7 | ) |  | — |  |  | — |  |  | (43.7 | ) |  | — |  |  | (43.7 | )
Interest income and other |  |  |  |  |  |  | (0.4 | ) |  | — |  |  | (0.4 | )
Income taxes |  |  |  |  |  |  | 49.3 |  |  | 4.6 |  |  | 53.9 |
Income from continuing operations, net of tax |  |  |  |  |  |  | 367.4 |  |  | 14.7 |  |  | 382.1 |
Loss from discontinued operations, net of tax |  |  |  |  |  |  | — |  |  | (5.9 | ) |  | (5.9 | )
Net income |  |  |  |  |  |  | 367.4 |  |  | 8.8 |  |  | 376.2 |
Preferred dividends |  |  |  |  |  |  | 17.9 |  |  | — |  |  | 17.9 |
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, net of AFUDC |  |  |  |  |  |  | 136.8 |  |  | (2.0 | ) |  | 134.8 |
Equity (income) loss from unconsolidated investments, net | (42.1 | ) |  | — |  |  | — |  |  | (42.1 | ) |  | 0.8 |  |  | (41.3 | )
Interest income and other |  |  |  |  |  |  | (0.3 | ) |  | (3.7 | ) |  | (4.0 | )
Income taxes |  |  |  |  |  |  | 74.8 |  |  | 14.6 |  |  | 89.4 |
Income from continuing operations, net of tax |  |  |  |  |  |  | 315.9 |  |  | 24.9 |  |  | 340.8 |
Loss from discontinued operations, net of tax |  |  |  |  |  |  | — |  |  | (5.1 | ) |  | (5.1 | )
Net income |  |  |  |  |  |  | 315.9 |  |  | 19.8 |  |  | 335.7 |
Preferred dividends |  |  |  |  |  |  | 15.9 |  |  | — |  |  | 15.9 |
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 |
| Utility |  | Non-Regulated, |  | Alliant Energy
2011 | Electric |  | Gas |  | Other |  | Total |  | Parent and Other |  | Consolidated
Operating revenues |  | $2,635.8 |  |  |  | $476.7 |  |  |  | $62.0 |  |  |  | $3,174.5 |  |  |  | $46.9 |  |  |  | $3,221.4 |
Depreciation and amortization | 289.0 |  |  | 28.4 |  |  | 1.8 |  |  | 319.2 |  |  | 1.8 |  |  | 321.0 |
Operating income (loss) | 444.2 |  |  | 47.8 |  |  | (3.2 | ) |  | 488.8 |  |  | 24.5 |  |  | 513.3 |
Interest expense, net of AFUDC |  |  |  |  |  |  | 146.6 |  |  | (0.3 | ) |  | 146.3 |
Equity income from unconsolidated investments, net | (38.7 | ) |  | — |  |  | — |  |  | (38.7 | ) |  | (0.6 | ) |  | (39.3 | )
Interest income and other |  |  |  |  |  |  | (0.2 | ) |  | (4.1 | ) |  | (4.3 | )
Income tax expense (benefit) |  |  |  |  |  |  | 78.3 |  |  | (9.1 | ) |  | 69.2 |
Income from continuing operations, net of tax |  |  |  |  |  |  | 302.8 |  |  | 38.6 |  |  | 341.4 |
Loss from discontinued operations, net of tax |  |  |  |  |  |  | — |  |  | (19.5 | ) |  | (19.5 | )
Net income |  |  |  |  |  |  | 302.8 |  |  | 19.1 |  |  | 321.9 |
Preferred dividends |  |  |  |  |  |  | 18.3 |  |  | — |  |  | 18.3 |
Net income attributable to Alliant Energy common shareowners |  |  |  |  |  |  | 284.5 |  |  | 19.1 |  |  | 303.6 |
Total assets | 7,524.5 |  |  | 831.9 |  |  | 781.1 |  |  | 9,137.5 |  |  | 550.4 |  |  | 9,687.9 |
Investments in equity method subsidiaries | 246.5 |  |  | — |  |  | — |  |  | 246.5 |  |  | 3.1 |  |  | 249.6 |
Construction and acquisition expenditures | 542.7 |  |  | 38.0 |  |  | 27.4 |  |  | 608.1 |  |  | 65.3 |  |  | 673.4 |
Products and Services - Alliant Energy’s consolidated operating revenues by segment were as follows:
| 2013 |  | 2012 |  | 2011
Utility electric operations | 82 | % |  | 84 | % |  | 82 | %
Utility gas operations | 14 | % |  | 13 | % |  | 15 | %
Utility other | 2 | % |  | 2 | % |  | 2 | %
Other | 2 | % |  | 1 | % |  | 1 | %
| 100 | % |  | 100 | % |  | 100 | %
Geographic Information - At December 31, 2013, 2012 and 2011, 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):
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, net of AFUDC |  |  |  |  |  |  | 60.3 |
Interest income and other |  |  |  |  |  |  | (0.3 | )
Income tax benefit |  |  |  |  |  |  | (37.9 | )
Net income |  |  |  |  |  |  | 189.9 |
Preferred dividends |  |  |  |  |  |  | 16.3 |
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, net of AFUDC |  |  |  |  |  |  | 70.1 |
Interest income and other |  |  |  |  |  |  | (0.2 | )
Income tax benefit |  |  |  |  |  |  | (19.8 | )
Net income |  |  |  |  |  |  | 150.2 |
Preferred dividends |  |  |  |  |  |  | 12.6 |
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 |
2011 | Electric |  | Gas |  | Other |  | Total
Operating revenues |  | $1,408.3 |  |  |  | $276.3 |  |  |  | $55.5 |  |  |  | $1,740.1 |
Depreciation and amortization | 161.3 |  |  | 16.0 |  |  | 1.8 |  |  | 179.1 |
Operating income | 181.6 |  |  | 20.6 |  |  | 6.2 |  |  | 208.4 |
Interest expense, net of AFUDC |  |  |  |  |  |  | 72.9 |
Interest income and other |  |  |  |  |  |  | (0.2 | )
Income tax benefit |  |  |  |  |  |  | (3.6 | )
Net income |  |  |  |  |  |  | 139.3 |
Preferred dividends |  |  |  |  |  |  | 15.0 |
Earnings available for common stock |  |  |  |  |  |  | 124.3 |
Total assets | 4,208.2 |  |  | 471.1 |  |  | 414.2 |  |  | 5,093.5 |
Construction and acquisition expenditures | 245.6 |  |  | 21.2 |  |  | 26.9 |  |  | 293.7 |
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):
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, net of AFUDC |  |  |  |  |  |  | 75.2 |
Equity income from unconsolidated investments | (43.7 | ) |  | — |  |  | — |  |  | (43.7 | )
Interest income and other |  |  |  |  |  |  | (0.1 | )
Income taxes |  |  |  |  |  |  | 87.2 |
Net income |  |  |  |  |  |  | 177.5 |
Preferred dividends |  |  |  |  |  |  | 1.6 |
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, net of AFUDC |  |  |  |  |  |  | 66.7 |
Equity income from unconsolidated investments | (42.1) |  | — |  | — |  |  | (42.1 | )
Interest income and other |  |  |  |  |  |  | (0.1 | )
Income taxes |  |  |  |  |  |  | 94.6 |
Net income |  |  |  |  |  |  | 165.7 |
Preferred dividends |  |  |  |  |  |  | 3.3 |
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 |
2011 | Electric |  | Gas |  | Other |  | Total
Operating revenues | $1,227.5 |  |  | $200.4 |  |  |  | $6.5 |  |  |  | $1,434.4 |
Depreciation and amortization | 127.7 |  | 12.4 |  |  | — |  |  | 140.1 |
Operating income (loss) | 262.6 |  | 27.2 |  |  | (9.4 | ) |  | 280.4 |
Interest expense, net of AFUDC |  |  |  |  |  |  | 73.7 |
Equity income from unconsolidated investments | (38.7) |  | — |  |  | — |  |  | (38.7 | )
Income taxes |  |  |  |  |  |  | 81.9 |
Net income |  |  |  |  |  |  | 163.5 |
Preferred dividends |  |  |  |  |  |  | 3.3 |
Earnings available for common stock |  |  |  |  |  |  | 160.2 |
Total assets | 3,316.3 |  | 360.8 |  |  | 366.9 |  |  | 4,044.0 |
Investments in equity method subsidiaries | 246.5 |  | — |  |  | — |  |  | 246.5 |
Construction and acquisition expenditures | 297.1 |  | 16.8 |  |  | 0.5 |  |  | 314.4 |

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