|
Fair Value Measurements (Tables)
|
12 Months Ended |
|
Dec. 31, 2012
|
| Fair Value Disclosures [Abstract] |
|
| Fair Value Inputs, Assets and Liabilities, Quantitative Information |
The following table describes the valuation techniques and unobservable inputs for the fair value of financial assets and liabilities classified as Level 3 in the fair value hierarchy for the period ended December 31, 2012: | | | | | | | | | | | | | | Fair Value | | | Range [Weighted | | | Assets | Liabilities | Valuation Technique(s) | Unobservable Input | Average] | Level 3 Derivative asset and liability - commodity contracts(a): | | | Ameren(b) | Fuel oils | $ | 9 |
| $ | (3 | ) | Discounted cash flow | Escalation rate(%)(c) | .21 - .68 [.48] | | | | | | Counterparty credit risk(%)(d),(e) | .12 - 1 [1] | | | | | | Ameren credit risk(%)(d),(e) | 2 - 31 [12] | | | | | Option model | Volatilities(%)(c) | 7 - 27 [24] | | Power(f) | 131 |
| (172 | ) | Option model | Volatilities(%)(d) | 13 - 38 [26] | | | | | | Average bid/ask consensus peak and off-peak pricing($/MWh)(d) | 24 - 45 [36] | | | | | Discounted cash flow | Average bid/ask consensus peak and off-peak pricing - forwards/swaps($/MWh)(d) | 16 - 52 [32] | | | | | | Estimated auction price for FTRs($/MW)(c) | (133,787) - 19,671 [198] | | | | | | Nodal basis($/MWh)(d) | (12) - 1 [(1)] | | | | | | Counterparty credit risk(%)(d),(e) | .04 - 100 [2] | | | | | | Ameren credit risk(%)(d),(e) | 2 - 5 [5] | | | | | Fundamental energy production model | Estimated future gas prices($/mmbtu)(c) | 4 - 8 [6] | | | | | Contract price allocation | Estimated renewable energy credit costs($/credit)(c) | 5 - 7 [6] | | Uranium | — |
| (2 | ) | Discounted cash flow | Average bid/ask consensus pricing($/pound)(c) | 43 - 46 [44] | Ameren Missouri | Fuel oils | $ | 8 |
| $ | (3 | ) | Discounted cash flow | Escalation rate(%)(c) | .21 - .60 [.44] | | | | | | Counterparty credit risk(%)(d),(e) | .12 - 1 [1] | | | | | | Ameren Missouri credit risk(%)(d),(e) | 2 | | | | | Option model | Volatilities(%)(c) | 7 - 27 [24] | | Power(f) | 14 |
| (3 | ) | Discounted cash flow | Average bid/ask consensus peak and off-peak pricing - forwards/swaps($/MWh)(d) | 24 - 56 [36] | | | | | | Estimated auction price for FTRs($/MW)(c) | (281) - 1,851 [178] | | | | | | Nodal basis($/MWh)(d) | (5) - (1) [(2)] | | | | | | Counterparty credit risk(%)(d),(e) | .22 - 1 [1] | | | | | | Ameren Missouri credit risk(%)(d),(e) | 2 | | Uranium | — |
| (2 | ) | Discounted cash flow | Average bid/ask consensus pricing($/pound)(c) | 43 - 46 [44] | Ameren Illinois | Power(f) | $ | — |
| $ | (111 | ) | Discounted cash flow | Average bid/ask consensus peak and off-peak pricing - forwards/swaps($/MWh)(c) | 22 - 47 [30] | | | | | | Nodal basis($/MWh)(c) | (5) - (1) [(3)] | | | | | | Ameren Illinois credit risk(%)(d),(e) | 5 | | | | | Fundamental energy production model | Estimated future gas prices($/mmbtu)(c) | 4 - 8 [6] | | | | | Contract price allocation | Estimated renewable energy credit costs($/credit)(c) | 5 - 7 [6] |
| | (a) | The derivative asset and liability balances are presented net of counterparty credit considerations. |
| | (b) | Includes amounts for Ameren registrant and nonregistrant subsidiaries and intercompany eliminations. |
| | (c) | Generally, significant increases (decreases) in this input in isolation would result in a significantly higher (lower) fair value measurement. |
| | (d) | Generally, significant increases (decreases) in this input in isolation would result in a significantly lower (higher) fair value measurement. |
| | (e) | Counterparty credit risk is only applied to counterparties with derivative asset balances. Ameren, Ameren Missouri, and Ameren Illinois credit risk is only applied to counterparties with derivative liability balances. |
| | (f) | Power valuations utilize visible third party pricing evaluated by month for peak and off-peak through 2017. Valuations beyond 2017 utilize fundamentally modeled pricing by month for peak and off-peak. |
|
| Schedule Of Fair Value Hierarchy Of Assets And Liabilities Measured At Fair Value On Recurring Basis |
The following table sets forth, by level within the fair value hierarchy, our assets and liabilities measured at fair value on a recurring basis as of December 31, 2012: | | | | | | | | | | | | | | | | | | | | | | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Other Unobservable Inputs (Level 3) | | Total | Assets: | | | | | | | | | | Ameren(a) | Derivative assets - commodity contracts(b): | | | | | | | | | | Coal | | $ | 1 |
| | $ | — |
| | $ | — |
| | $ | 1 |
| | Fuel oils | | 6 |
| | — |
| | 9 |
| | 15 |
| | Natural gas | | 4 |
| | 2 |
| | — |
| | 6 |
| | Power | | — |
| | 9 |
| | 131 |
| | 140 |
| | Total derivative assets - commodity contracts | | $ | 11 |
| | $ | 11 |
| | $ | 140 |
| | $ | 162 |
| | Nuclear decommissioning trust fund(c): | | | | | | | | | | Cash and cash equivalents | | 1 |
| | — |
| | — |
| | 1 |
| | Equity securities: | | | | | | | | | | U.S. large capitalization | | 264 |
| | — |
| | — |
| | 264 |
| | Debt securities: | | | | | | | | | | Corporate bonds | | — |
| | 47 |
| | — |
| | 47 |
| | Municipal bonds | | — |
| | 1 |
| | — |
| | 1 |
| | U.S. treasury and agency securities | | — |
| | 81 |
| | — |
| | 81 |
| | Asset-backed securities | | — |
| | 11 |
| | — |
| | 11 |
| | Other | | — |
| | 1 |
| | — |
| | 1 |
| | Total nuclear decommissioning trust fund | | $ | 265 |
| | $ | 141 |
| | $ | — |
| | $ | 406 |
| | Total Ameren | | $ | 276 |
| | $ | 152 |
| | $ | 140 |
| | $ | 568 |
|
| | | | | | | | | | | | | | | | | | | Ameren Missouri | Derivative assets - commodity contracts(b): | | | | | | | | |
| Fuel oils | | $ | 4 |
| | $ | — |
| | $ | 8 |
| | $ | 12 |
| | Natural gas | | — |
| | 1 |
| | — |
| | 1 |
| | Power | | — |
| | 1 |
| | 14 |
| | 15 |
| | Total derivative assets - commodity contracts | | $ | 4 |
| | $ | 2 |
| | $ | 22 |
| | $ | 28 |
| | Nuclear decommissioning trust fund(c): | | | | | | | | | | Cash and cash equivalents | | 1 |
| | — |
| | — |
| | 1 |
| | Equity securities: | | | | | | | | | | U.S. large capitalization | | 264 |
| | — |
| | — |
| | 264 |
| | Debt securities: | | | | | | | | | | Corporate bonds | | — |
| | 47 |
| | — |
| | 47 |
| | Municipal bonds | | — |
| | 1 |
| | — |
| | 1 |
| | U.S. treasury and agency securities | | — |
| | 81 |
| | — |
| | 81 |
| | Asset-backed securities | | — |
| | 11 |
| | — |
| | 11 |
| | Other | | — |
| | 1 |
| | — |
| | 1 |
| | Total nuclear decommissioning trust fund | | $ | 265 |
| | $ | 141 |
| | $ | — |
| | $ | 406 |
| | Total Ameren Missouri | | $ | 269 |
| | $ | 143 |
| | $ | 22 |
| | $ | 434 |
| Ameren Illinois | Derivative assets - commodity contracts(b): | | | | | | | | |
| Natural gas | | $ | — |
| | $ | 1 |
| | $ | — |
| | $ | 1 |
| | Power | | — |
| | — |
| | — |
| | — |
| | Total Ameren Illinois | | $ | — |
| | $ | 1 |
| | $ | — |
| | $ | 1 |
| Liabilities: | | | | | | | | | | Ameren(a) | Derivative liabilities - commodity contracts(b): | | | | | | | | | | Coal | | $ | 13 |
| | $ | — |
| | $ | — |
| | $ | 13 |
| | Fuel oils | | 3 |
| | — |
| | 3 |
| | 6 |
| | Natural gas | | 11 |
| | 102 |
| | — |
| | 113 |
| | Power | | — |
| | 9 |
| | 172 |
| | 181 |
| | Uranium | | — |
| | — |
| | 2 |
| | 2 |
| | Total Ameren | | $ | 27 |
| | $ | 111 |
| | $ | 177 |
| | $ | 315 |
| Ameren Missouri | Derivative liabilities - commodity contracts(b): | | | | | | | | |
| Fuel oils | | $ | 1 |
| | $ | — |
| | $ | 3 |
| | $ | 4 |
| | Natural gas | | 7 |
| | 8 |
| | — |
| | 15 |
| | Power | | — |
| | 1 |
| | 3 |
| | 4 |
| | Uranium | | — |
| | — |
| | 2 |
| | 2 |
| | Total Ameren Missouri | | $ | 8 |
| | $ | 9 |
| | $ | 8 |
| | $ | 25 |
| Ameren Illinois | Derivative liabilities - commodity contracts(b): | | | | | | | | |
| Natural gas | | $ | — |
| | $ | 94 |
| | $ | — |
| | $ | 94 |
| | Power | | — |
| | — |
| | 111 |
| | 111 |
| | Total Ameren Illinois | | $ | — |
| | $ | 94 |
| | $ | 111 |
| | $ | 205 |
|
| | (a) | Includes amounts for Ameren registrant and nonregistrant subsidiaries and intercompany eliminations. |
| | (b) | The derivative asset and liability balances are presented net of counterparty credit considerations. |
| | (c) | Balance excludes $2 million of receivables, payables, and accrued income, net. |
The following table sets forth, by level within the fair value hierarchy, our assets and liabilities measured at fair value on a recurring basis as of December 31, 2011: | | | | | | | | | | | | | | | | | | | | | | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Other Unobservable Inputs (Level 3) | | Total | Assets: | | | | | | | | | | Ameren(a) | Derivative assets - commodity contracts(b): | | | | | | | | | | Fuel oils | | $ | 33 |
| | $ | — |
| | $ | 4 |
| | $ | 37 |
| | Natural gas | | 4 |
| | — |
| | 2 |
| | 6 |
| | Power | | — |
| | 2 |
| | 193 |
| | 195 |
|
| | | | | | | | | | | | | | | | | | | | Total derivative assets - commodity contracts | | $ | 37 |
| | $ | 2 |
| | $ | 199 |
| | $ | 238 |
| | Nuclear decommissioning trust fund(c): | | | | | | | | | | Cash and cash equivalents | | 3 |
| | — |
| | — |
| | 3 |
| | Equity securities: | | | | | | | | | | U.S. large capitalization | | 234 |
| | — |
| | — |
| | 234 |
| | Debt securities: | | | | | | | | | | Corporate bonds | | — |
| | 44 |
| | — |
| | 44 |
| | Municipal bonds | | — |
| | 1 |
| | — |
| | 1 |
| | U.S. treasury and agency securities | | — |
| | 65 |
| | — |
| | 65 |
| | Asset-backed securities | | — |
| | 10 |
| | — |
| | 10 |
| | Other | | — |
| | 1 |
| | — |
| | 1 |
| | Total nuclear decommissioning trust fund | | $ | 237 |
| | $ | 121 |
| | $ | — |
| | $ | 358 |
| | Total Ameren | | $ | 274 |
| | $ | 123 |
| | $ | 199 |
| | $ | 596 |
| Ameren Missouri | Derivative assets - commodity contracts(b): | | | | | | | | |
| Fuel oils | | $ | 20 |
| | $ | — |
| | $ | 3 |
| | $ | 23 |
| | Natural gas | | 2 |
| | — |
| | — |
| | 2 |
| | Power | | — |
| | 1 |
| | 29 |
| | 30 |
| | Total derivative assets - commodity contracts | | $ | 22 |
| | $ | 1 |
| | $ | 32 |
| | $ | 55 |
| | Nuclear decommissioning trust fund(c): | | | | | | | | | | Cash and cash equivalents | | 3 |
| | — |
| | — |
| | 3 |
| | Equity securities: | | | | | | | | | | U.S. large capitalization | | 234 |
| | — |
| | — |
| | 234 |
| | Debt securities: | | | | | | | | | | Corporate bonds | | — |
| | 44 |
| | — |
| | 44 |
| | Municipal bonds | | — |
| | 1 |
| | — |
| | 1 |
| | U.S. treasury and agency securities | | — |
| | 65 |
| | — |
| | 65 |
| | Asset-backed securities | | — |
| | 10 |
| | — |
| | 10 |
| | Other | | — |
| | 1 |
| | — |
| | 1 |
| | Total nuclear decommissioning trust fund | | $ | 237 |
| | $ | 121 |
| | $ | — |
| | $ | 358 |
| | Total Ameren Missouri | | $ | 259 |
| | $ | 122 |
| | $ | 32 |
| | $ | 413 |
| Ameren Illinois | Derivative assets - commodity contracts(b): | | | | | | | | |
| Natural gas | | $ | — |
| | $ | — |
| | $ | 2 |
| | $ | 2 |
| | Power | | — |
| | — |
| | 77 |
| | 77 |
| | Total Ameren Illinois | | $ | — |
| | $ | — |
| | $ | 79 |
| | $ | 79 |
| Liabilities: | | | | | | | | | | Ameren(a) | Derivative liabilities - commodity contracts(b): | | | | | | | | | | Fuel oils | | $ | 2 |
| | $ | — |
| | $ | — |
| | $ | 2 |
| | Natural gas | | 22 |
| | — |
| | 176 |
| | 198 |
| | Power | | — |
| | 2 |
| | 78 |
| | 80 |
| | Uranium | | — |
| | — |
| | 1 |
| | 1 |
| | Total Ameren | | $ | 24 |
| | $ | 2 |
| | $ | 255 |
| | $ | 281 |
| Ameren Missouri | Derivative liabilities - commodity contracts(b): | | | | | | | | |
| Fuel oils | | $ | 1 |
| | $ | — |
| | $ | — |
| | $ | 1 |
| | Natural gas | | 12 |
| | — |
| | 14 |
| | 26 |
| | Power | | — |
| | 1 |
| | 8 |
| | 9 |
| | Uranium | | — |
| | — |
| | 1 |
| | 1 |
| | Total Ameren Missouri | | $ | 13 |
| | $ | 1 |
| | $ | 23 |
| | $ | 37 |
| Ameren Illinois | Derivative liabilities - commodity contracts(b): | | | | | | | | |
| Natural gas | | $ | 7 |
| | $ | — |
| | $ | 162 |
| | $ | 169 |
| | Power | | — |
| | — |
| | 217 |
| | 217 |
| | Total Ameren Illinois | | $ | 7 |
| | $ | — |
| | $ | 379 |
| | $ | 386 |
|
| | (a) | Includes amounts for Ameren registrant and nonregistrant subsidiaries and intercompany eliminations. |
| | (b) | The derivative asset and liability balances are presented net of counterparty credit considerations. |
| | (c) | Balance excludes $(1) million of receivables, payables, and accrued income, net. |
|
| Schedule Of Changes In The Fair Value Of Financial Assets And Liabilities Classified As Level 3 In The Fair Value Hierarchy |
The following table summarizes the changes in the fair value of financial assets and liabilities classified as Level 3 in the fair value hierarchy as of December 31, 2012: | | | | | | | | | | | | | | | | Net Derivative Commodity Contracts | | | Ameren Missouri | | Ameren Illinois | | Other(a) | | Ameren | Fuel oils: | | | | | | | | | Beginning balance at January 1, 2012 | $ | 3 |
| $ | (b) |
| $ | 1 |
| $ | 4 |
| Realized and unrealized gains (losses): | | | | | | | | | Included in regulatory assets/liabilities | | (1 | ) | | (b) |
| | (b) |
| | (1 | ) | Total realized and unrealized gains (losses) | | (1 | ) | | (b) |
| | (b) |
| | (1 | ) | Purchases | | 7 |
| | (b) |
| | — |
| | 7 |
| Sales | | (3 | ) | | (b) |
| | — |
| | (3 | ) | Settlements | | (2 | ) | | (b) |
| | — |
| | (2 | ) | Transfers into Level 3 | | 1 |
| | (b) |
| | 1 |
| | 2 |
| Transfers out of Level 3 | | — |
| | (b) |
| | (1 | ) | | (1 | ) | Ending balance at December 31, 2012 | $ | 5 |
| $ | (b) |
| $ | 1 |
| $ | 6 |
| Change in unrealized gains (losses) related to assets/liabilities held at December 31,2012 | $ | (1 | ) | $ | (b) |
| $ | — |
| $ | (1 | ) | Natural gas: | | | | | | | | | Beginning balance at January 1, 2012 | $ | (14 | ) | $ | (160 | ) | $ | — |
| $ | (174 | ) | Realized and unrealized gains (losses): | | | | | | | | | Included in regulatory assets/liabilities | | (2 | ) | | (25 | ) | | (b) |
| | (27 | ) | Total realized and unrealized gains (losses) | | (2 | ) | | (25 | ) | | (b) |
| | (27 | ) | Purchases | | — |
| | — |
| | 1 |
| | 1 |
| Settlements | | 1 |
| | 15 |
| | (1 | ) | | 15 |
| Transfers out of Level 3 | | 15 |
| | 170 |
| | — |
| | 185 |
| Ending balance at December 31, 2012 | $ | — |
| $ | — |
| $ | — |
| $ | — |
| Change in unrealized gains (losses) related to assets/liabilities held at December 31, 2012 | $ | — |
| $ | — |
| $ | — |
| $ | — |
| Power: | | | | | | | | | Beginning balance at January 1, 2012 | $ | 21 |
| $ | (140 | ) | $ | 234 |
| $ | 115 |
| Realized and unrealized gains (losses): | | | | | | | | | Included in earnings(c) | | — |
| | — |
| | 27 |
| | 27 |
| Included in OCI | | — |
| | — |
| | 26 |
| | 26 |
| Included in regulatory assets/liabilities | | 11 |
| | (226 | ) | | 40 |
| | (175 | ) | Total realized and unrealized gains (losses) | | 11 |
| | (226 | ) | | 93 |
| | (122 | ) | Purchases | | 21 |
| | — |
| | 8 |
| | 29 |
| Sales | | (1 | ) | | — |
| | 2 |
| | 1 |
| Settlements | | (37 | ) | | 255 |
| | (279 | ) | | (61 | ) | Transfers out of Level 3 | | (4 | ) | | — |
| | 1 |
| | (3 | ) | Ending balance at December 31, 2012 | $ | 11 |
| $ | (111 | ) | $ | 59 |
| $ | (41 | ) | Change in unrealized gains (losses) related to assets/liabilities held at December 31, 2012 | $ | — |
| $ | (191 | ) | (d) $ | 44 |
| $ | (147 | ) | Uranium: | | | | | | | | | Beginning balance at January 1, 2012 | $ | (1 | ) | $ | (b) |
| $ | (b) |
| $ | (1 | ) | Realized and unrealized gains (losses): | | | | | | | | | Included in regulatory assets/liabilities | | (2 | ) | | (b) |
| | (b) |
| | (2 | ) | Total realized and unrealized gains (losses) | | (2 | ) | | (b) |
| | (b) |
| | (2 | ) | Settlements | | 1 |
| | (b) |
| | (b) |
| | 1 |
| Ending balance at December 31, 2012 | $ | (2 | ) | $ | (b) |
| $ | (b) |
| $ | (2 | ) | Change in unrealized gains (losses) related to assets/liabilities held at December 31, 2012 | $ | (1 | ) | $ | (b) |
| $ | (b) |
| $ | (1 | ) |
| | (a) | Includes amounts for Marketing Company, AERG, Genco, and intercompany eliminations, including the elimination of financial power contracts between Ameren Illinois and Marketing Company. |
| | (c) | Net gains and losses on power derivative commodity contracts are recorded in “Operating Revenues - Electric”. |
| | (d) | The change in unrealized losses was due to decreases in long-term power prices applied to 20-year Ameren Illinois swap contracts, which expire in May 2032. |
The following table summarizes the changes in the fair value of financial assets and liabilities classified as Level 3 in the fair value hierarchy as of December 31, 2011: | | | | | | | | | | | | | | | | Net Derivative Commodity Contracts | | | Ameren Missouri | | Ameren Illinois | | Other(a) | | Ameren | Fuel oils: | | | | | | | | | Beginning balance at January 1, 2011 | $ | 30 |
| $ | (b) |
| $ | 21 |
| $ | 51 |
| Realized and unrealized gains (losses): | | | | | | | | | Included in earnings(c) | | — |
|
| (b) |
| | 16 |
| | 16 |
| Included in regulatory assets/liabilities | | 19 |
| | (b) |
| | (b) |
| | 19 |
| Total realized and unrealized gains (losses) | | 19 |
| | (b) |
| | 16 |
| | 35 |
| Purchases | | 4 |
| | (b) |
| | 1 |
| | 5 |
| Sales | | (1 | ) | | (b) |
| | — |
| | (1 | ) | Settlements | | (30 | ) | | (b) |
| | (26 | ) | | (56 | ) | Transfers out of Level 3 | | (19 | ) | | (b) |
| | (11 | ) | | (30 | ) | Ending balance at December 31, 2011 | $ | 3 |
| $ | (b) |
| $ | 1 |
| $ | 4 |
| Change in unrealized gains (losses) related to assets/liabilities held at December 31, 2011 | $ | (11 | ) | $ | (b) |
| $ | (7 | ) | $ | (18 | ) | Natural gas: | | | | | | | | | Beginning balance at January 1, 2011 | $ | (14 | ) | $ | (134 | ) | $ | — |
| $ | (148 | ) | Realized and unrealized gains (losses): | | | | | | | | | Included in regulatory assets/liabilities | | (8 | ) | | (107 | ) | | (b) |
| | (115 | ) | Total realized and unrealized gains (losses) | | (8 | ) | | (107 | ) | | (b) |
| | (115 | ) | Purchases | | — |
| | 1 |
| | — |
| | 1 |
| Sales | | — |
| | (1 | ) | | — |
| | (1 | ) | Settlements | | 8 |
| | 81 |
| | — |
| | 89 |
| Ending balance at December 31, 2011 | $ | (14 | ) | $ | (160 | ) | $ | — |
| $ | (174 | ) | Change in unrealized gains (losses) related to assets/liabilities held at December 31, 2011 | $ | (6 | ) | $ | (72 | ) | $ | — |
| $ | (78 | ) | Power: | | | | | | | | | Beginning balance at January 1, 2011 | $ | 2 |
| $ | (352 | ) | $ | 386 |
| $ | 36 |
| Realized and unrealized gains (losses): | | | | | | | | | Included in earnings(c) | | — |
| | — |
| | (13 | ) | | (13 | ) | Included in OCI | | — |
| | — |
| | 24 |
| | 24 |
| Included in regulatory assets/liabilities | | 17 |
| | 7 |
| | 51 |
| | 75 |
| Total realized and unrealized gains (losses) | | 17 |
| | 7 |
| | 62 |
| | 86 |
| Purchases | | 30 |
| | — |
| | 35 |
| | 65 |
| Sales | | (1 | ) | | — |
| | (21 | ) | | (22 | ) | Settlements | | (27 | ) | | 205 |
| | (227 | ) | | (49 | ) | Transfers into Level 3 | | (1 | ) | | — |
| | 1 |
| | — |
| Transfers out of Level 3 | | 1 |
| | — |
| | (2 | ) | | (1 | ) | Ending balance at December 31, 2011 | $ | 21 |
| $ | (140 | ) | $ | 234 |
| $ | 115 |
| Change in unrealized gains (losses) related to assets/liabilities held at December 31, 2011 | $ | 1 |
| $ | 13 |
| $ | 59 |
| $ | 73 |
| Uranium: | | | | | | | | | Beginning balance at January 1, 2011 | $ | 2 |
| $ | (b) |
| $ | (b) |
| $ | 2 |
| Realized and unrealized gains (losses): | | | | | | | | | Included in regulatory assets/liabilities | | (3 | ) | | (b) |
| | (b) |
| | (3 | ) | Total realized and unrealized gains (losses) | | (3 | ) | | (b) |
| | (b) |
| | (3 | ) | Purchases | | (1 | ) | | (b) |
| | (b) |
| | (1 | ) | Settlements | | 1 |
| | (b) |
| | (b) |
| | 1 |
| Ending balance at December 31, 2011 | $ | (1 | ) | $ | (b) |
| $ | (b) |
| $ | (1 | ) | Change in unrealized gains (losses) related to assets/liabilities held at December 31, 2011 | $ | — |
| $ | (b) |
| $ | (b) |
| $ | — |
|
| | (a) | Includes amounts for Marketing Company, AERG, Genco, and intercompany eliminations, including the elimination of financial power contracts between Ameren Illinois and Marketing Company. |
| | (c) | Net gains and losses on fuel oils derivative commodity contracts are recorded in "Operating Expenses - Fuel," while net gains and losses on power derivative commodity contracts are recorded in “Operating Revenues - Electric." |
|
| Schedule Of Transfers Between Fair Value Hierarchy Levels |
The following table summarizes all transfers between fair value hierarchy levels related to derivative commodity contracts for the years ended December 31, 2012 and 2011: | | | | | | | | | | 2012 | | 2011 | Ameren - derivative commodity contracts:(a) |
|
|
| Transfers into Level 3 / Transfers out of Level 1 - Fuel oils | $ | 2 |
| | $ | — |
| Transfers out of Level 3 / Transfers into Level 1 - Fuel oils | (1 | ) | | (30 | ) | Transfers out of Level 3 / Transfers into Level 2 - Natural gas | 185 |
| | — |
| Transfers into Level 3 / Transfers out of Level 2 - Power | — |
| | — |
| Transfers out of Level 3 / Transfers into Level 2 - Power | (3 | ) | | (1 | ) | Net fair value of Level 3 transfers | $ | 183 |
| | $ | (31 | ) | Ameren Missouri - derivative commodity contracts: | | | | Transfers into Level 3 / Transfers out of Level 1 - Fuel oils | $ | 1 |
| | $ | — |
| Transfers out of Level 3 / Transfers into Level 1 - Fuel oils | — |
| | (19 | ) | Transfers out of Level 3 / Transfers into Level 2 - Natural gas | 15 |
| | — |
| Transfers into Level 3 / Transfers out of Level 2 - Power | — |
| | (1 | ) | Transfers out of Level 3 / Transfers into Level 2 - Power | (4 | ) | | 1 |
| Net fair value of Level 3 transfers | $ | 12 |
| | $ | (19 | ) | Ameren Illinois - derivative commodity contracts: | | | | Transfers out of Level 3 / Transfers into Level 2 - Natural gas | $ | 170 |
| | $ | — |
|
| | (a) | Includes amounts for Ameren registrant and nonregistrant subsidiaries. |
|
| Schedule Of Carrying Amounts And Estimated Fair Values Of Long-Term Debt And Preferred Stock |
The following table presents the carrying amounts and estimated fair values of our long-term debt and preferred stock at December 31, 2012 and 2011: | | | | | | | | | | | | | | | | | | 2012 | | 2011 | | Carrying Amount | | Fair Value | | Carrying Amount | | Fair Value | Ameren:(a)(b) | | | | | | | | Long-term debt and capital lease obligations (including current portion) | $ | 6,981 |
| | $ | 7,728 |
| | $ | 6,856 |
| | $ | 7,800 |
| Preferred stock | 142 |
| | 123 |
| | 142 |
| | 92 |
| Ameren Missouri: | | | | | | | | Long-term debt and capital lease obligations (including current portion) | $ | 4,006 |
| | $ | 4,625 |
| | $ | 3,950 |
| | $ | 4,541 |
| Preferred stock | 80 |
| | 73 |
| | 80 |
| | 55 |
| Ameren Illinois: | | | | | | | | Long-term debt (including current portion) | $ | 1,727 |
| | $ | 2,020 |
| | $ | 1,658 |
| | $ | 1,943 |
| Preferred stock | 62 |
| | 49 |
| | 62 |
| | 37 |
| Genco: | | | | | | | | Long-term debt (including current portion) | $ | 824 |
| | $ | 618 |
| | $ | 824 |
| | $ | 839 |
|
| | (a) | Includes amounts for Ameren registrant and nonregistrant subsidiaries and intercompany eliminations. |
| | (b) | Preferred stock along with the noncontrolling interest of EEI is recorded in "Noncontrolling Interests" on the balance sheet. |
|