v2.4.0.6

Condensed Parent Company Financial Statements Condensed Parent Company Financial Statements (Tables) | 12 Months Ended
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Dec. 31, 2012
Condensed Financial Information of Parent Company Only Disclosure [Abstract] |
Condensed Statements of Income | ALLIANT ENERGY CORPORATION (Parent Company Only) CONDENSED STATEMENTS OF INCOME
| Year Ended December 31,
| 2012 |  | 2011 |  | 2010
| (in millions)
Operating revenues |  | $2 |  |  |  | $4 |  |  |  | $1 |
Operating expenses | 1 |  |  | 1 |  |  | 2 |
Operating income (loss) | 1 |  |  | 3 |  |  | (1 | )
Interest expense and other: |  |  |  |  |
Equity earnings from consolidated subsidiaries | (322 | ) |  | (304 | ) |  | (292 | )
Interest expense | 11 |  |  | 11 |  |  | 11 |
Interest income | (4 | ) |  | (2 | ) |  | (1 | )
Total interest expense and other | (315 | ) |  | (295 | ) |  | (282 | )
Income before income taxes | 316 |  |  | 298 |  |  | 281 |
Income tax benefit | (4 | ) |  | (5 | ) |  | (6 | )
Net income |  | $320 |  |  |  | $303 |  |  |  | $287 |
Condensed Balance Sheets | ALLIANT ENERGY CORPORATION (Parent Company Only) CONDENSED BALANCE SHEETS
| December 31,
| 2012 |  | 2011
| (in millions)
ASSETS |  |  |
Current assets: |  |  |
Notes receivable from affiliated companies |  | $77 |  |  |  | $211 |
Income tax refunds receivable | — |  |  | 11 |
Other | 2 |  |  | 5 |
| 79 |  |  | 227 |
Investments: |  |  |
Investments in consolidated subsidiaries | 3,447 |  |  | 3,129 |
Other | 20 |  |  | 20 |
| 3,467 |  |  | 3,149 |
Other assets | 5 |  |  | 6 |
Total assets |  | $3,551 |  |  |  | $3,382 |
The accompanying Notes to Condensed Financial Statements are an integral part of these statements. ALLIANT ENERGY CORPORATION (Parent Company Only) CONDENSED BALANCE SHEETS (continued)
| December 31,
| 2012 |  | 2011
| (in millions)
CAPITALIZATION AND LIABILITIES |  |  |
Capitalization: |  |  |
Common stock and additional paid-in capital |  | $1,512 |  |  |  | $1,512 |
Retained earnings | 1,627 |  |  | 1,506 |
Accumulated other comprehensive loss | (1 | ) |  | (1 | )
Shares in deferred compensation trust | (7 | ) |  | (8 | )
Total common equity | 3,131 |  |  | 3,009 |
Long-term debt, net | 250 |  |  | 250 |
| 3,381 |  |  | 3,259 |
Current liabilities: |  |  |
Commercial paper | 105 |  |  | 70 |
Other | 21 |  |  | 14 |
| 126 |  |  | 84 |
Other long-term liabilities and deferred credits: |  |  |
Deferred income taxes | 38 |  |  | 32 |
Other | 6 |  |  | 7 |
| 44 |  |  | 39 |
Total capitalization and liabilities |  | $3,551 |  |  |  | $3,382 |
Condensed Statements of Cash Flows | ALLIANT ENERGY CORPORATION (Parent Company Only) CONDENSED STATEMENTS OF CASH FLOWS
| Year Ended December 31,
| 2012 |  | 2011 |  | 2010
| (in millions)
Net cash flows from operating activities |  | $260 |  |  |  | $193 |  |  |  | $110 |
Cash flows from (used for) investing activities: |  |  |  |  |  |  |  |
Capital contributions to consolidated subsidiaries | (230 | ) |  | (144 | ) |  | (125 | )
Capital repayments from consolidated subsidiaries | — |  |  | 101 |  |  | 183 |
Net change in notes receivable from affiliates | 134 |  |  | — |  |  | — |
Other | 1 |  |  | — |  |  | — |
Net cash flows from (used for) investing activities | (95 | ) |  | (43 | ) |  | 58 |
Cash flows used for financing activities: |  |  |  |  |  |  |  |
Common stock dividends | (199 | ) |  | (188 | ) |  | (175 | )
Net change in borrowings with affiliates | — |  |  | (155 | ) |  | 50 |
Net change in commercial paper | 35 |  |  | 70 |  |  | — |
Proceeds from issuance of common stock | 1 |  |  | 2 |  |  | 6 |
Other | (2 | ) |  | (2 | ) |  | (1 | )
Net cash flows used for financing activities | (165 | ) |  | (273 | ) |  | (120 | )
Net increase (decrease) in cash and cash equivalents | — |  |  | (123 | ) |  | 48 |
Cash and cash equivalents at beginning of period | — |  |  | 123 |  |  | 75 |
Cash and cash equivalents at end of period |  | $— |  |  |  | $— |  |  |  | $123 |
Supplemental cash flows information: |  |  |  |  |  |  |  |
Cash paid (refunded) during the period for: |  |  |  |  |  |  |  |
Interest, net of capitalized interest |  | $11 |  |  |  | $11 |  |  |  | $11 |
Income taxes, net of refunds | (29 | ) |  | (6 | ) |  | (11 | )

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