| Current Assets |
| Cash and cash equivalents |
12M |
| Funds on deposit |
2.4M |
| Receivables, net |
194.1M |
| Accounts receivable pledged as collateral |
190M |
| Fuel inventories, at average cost |
98.6M |
| Materials and supplies, at average cost |
161M |
| Deferred refueling outage costs |
11.7M |
| Refundable income taxes |
1.1M |
| Deferred income taxes |
| Derivative instruments |
| Prepaid expenses and other assets |
| Assets, Current, Total |
738.8M |
| Utility Plant, at Original Cost |
| Electric |
13.42B |
| Less-accumulated depreciation |
5.04B |
| Net utility plant in service |
8.38B |
| Construction work in progress |
400.9M |
| Nuclear Fuel, Net of Amortization |
66.5M |
| Public Utilities, Property, Plant and Equipment, Net |
8.84B |
| Investments and Other Assets |
| Nuclear decommissioning trust fund |
218.3M |
| Regulatory Assets |
980.4M |
| Goodwill |
169M |
| Derivative instruments |
| Other Assets, Noncurrent |
93.7M |
| Investments and Other Assets, Total |
1.46B |
| Assets, Total |
11.04B |
| Current Liabilities |
| Notes payable |
104M |
| Collateralized note payable |
190M |
| Commercial paper |
157.1M |
| Current maturities of long-term debt |
382.1M |
| Accounts payable |
227.7M |
| Accrued taxes |
123.4M |
| Accrued interest |
61.4M |
| Accrued compensation and benefits |
47.5M |
| Pension and post-retirement liability |
3.4M |
| Other Liabilities, Current |
24.7M |
| Liabilities, Current, Total |
1.4B |
| Deferred Credits and Other Liabilities |
| Deferred income taxes |
1.27B |
| Deferred tax credits |
126.5M |
| Asset retirement obligations |
285M |
| Pension and post-retirement liability |
467.2M |
| Regulatory Liabilities |
305.1M |
| Other Liabilities, Noncurrent |
82.6M |
| Liabilities, Noncurrent, Total |
2.54B |
| Common shareholders' equity |
| Common Stock, Value, Issued |
2.66B |
| Retained earnings |
1.09B |
| Treasury Stock, Value |
-3.8M |
| Accumulated other comprehensive loss |
-7.5M |
| Common Shareholders' Equity, Total |
| Cumulative preferred stock $100 par value |
| Preferred Stock, Value, Issued |
0 |
| Long-term debt |
3.36B |
| Total Capitalization |
7.11B |
| Commitments and Contingencies |
0 |
| Liabilities and Equity, Total |
11.04B |
| Kansas City Power and Light Company [Member] |
| Current Assets |
| Cash and cash equivalents |
5.7M |
| Funds on deposit |
1.4M |
| Receivables, net |
168.7M |
| Accounts receivable pledged as collateral |
110M |
| Fuel inventories, at average cost |
70.8M |
| Materials and supplies, at average cost |
118.4M |
| Deferred refueling outage costs |
11.7M |
| Refundable income taxes |
0 |
| Deferred income taxes |
| Derivative instruments |
| Prepaid expenses and other assets |
| Assets, Current, Total |
604.8M |
| Utility Plant, at Original Cost |
| Electric |
9.77B |
| Less-accumulated depreciation |
3.81B |
| Net utility plant in service |
5.96B |
| Construction work in progress |
306.5M |
| Nuclear Fuel, Net of Amortization |
66.5M |
| Public Utilities, Property, Plant and Equipment, Net |
6.34B |
| Investments and Other Assets |
| Nuclear decommissioning trust fund |
218.3M |
| Regulatory Assets |
733.6M |
| Other Assets, Noncurrent |
20.7M |
| Investments and Other Assets, Total |
972.6M |
| Assets, Total |
7.91B |
| Current Liabilities |
| Notes payable |
| Collateralized note payable |
110M |
| Commercial paper |
0 |
| Current maturities of long-term debt |
281M |
| Accounts payable |
180.3M |
| Accrued taxes |
125.7M |
| Accrued interest |
41.3M |
| Accrued compensation and benefits |
47.5M |
| Pension and post-retirement liability |
2M |
| Deferred income taxes |
| Other Liabilities, Current |
11.5M |
| Liabilities, Current, Total |
799.3M |
| Deferred Credits and Other Liabilities |
| Deferred income taxes |
1.21B |
| Deferred tax credits |
123M |
| Asset retirement obligations |
246.7M |
| Pension and post-retirement liability |
445.7M |
| Regulatory Liabilities |
176.5M |
| Other Liabilities, Noncurrent |
60.8M |
| Liabilities, Noncurrent, Total |
2.26B |
| Common shareholders' equity |
| Common Stock, Value, Issued |
1.56B |
| Retained earnings |
1.01B |
| Accumulated other comprehensive loss |
-5.6M |
| Common Shareholders' Equity, Total |
| Cumulative preferred stock $100 par value |
| Long-term debt |
2.28B |
| Total Capitalization |
4.85B |
| Commitments and Contingencies |
0 |
| Liabilities and Equity, Total |
7.91B |
| Cumulative Preferred Stock [Member] | Preferred Stock 3 Point 80 [Member] |
| Cumulative preferred stock $100 par value |
| Preferred Stock, Value, Issued |
0 |
| Cumulative Preferred Stock [Member] | Preferred Stock 4 Point 50 [Member] |
| Cumulative preferred stock $100 par value |
| Preferred Stock, Value, Issued |
0 |
| Cumulative Preferred Stock [Member] | Preferred Stock 4 Point 20 [Member] |
| Cumulative preferred stock $100 par value |
| Preferred Stock, Value, Issued |
0 |
| Cumulative Preferred Stock [Member] | Preferred Stock 4 Point 35 [Member] |
| Cumulative preferred stock $100 par value |
| Preferred Stock, Value, Issued |
0 |
