Related Party Transactions (Tables)
|
12 Months Ended |
Dec. 31, 2016 |
Appalachian Power Co [Member] |
|
Affiliated Revenues |
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2016 | | | | | | | | | | | Direct Sales to East Affiliates | | $ | 126.0 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Direct Sales to West Affiliates | | — |
| | — |
| | — |
| | — |
| | 3.7 |
| Auction Sales to OPCo (a) | | 9.2 |
| | 12.0 |
| | — |
| | — |
| | — |
| Direct Sales to AEPEP | | — |
| | — |
| | — |
| | — |
| | (0.2 | ) | Transmission Agreement and Transmission Coordination Agreement Sales | | 1.3 |
| | 12.2 |
| | (2.0 | ) | | (1.7 | ) | | 19.4 |
| Other Revenues | | 5.6 |
| | 2.0 |
| | 19.3 |
| | 4.3 |
| | 1.6 |
| Total Affiliated Revenues | | $ | 142.1 |
| | $ | 26.2 |
| | $ | 17.3 |
| | $ | 2.6 |
| | $ | 24.5 |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2015 | | | | | | | | | | | Direct Sales to East Affiliates | | $ | 132.1 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Auction Sales to OPCo (a) | | 10.6 |
| | 17.1 |
| | — |
| | — |
| | — |
| Direct Sales to AEPEP | | — |
| | — |
| | 29.7 |
| | — |
| | (0.2 | ) | Transmission Agreement and Transmission Coordination Agreement Sales | | 0.7 |
| | 8.4 |
| | 35.5 |
| | 0.2 |
| | 15.2 |
| Other Revenues | | 4.4 |
| | 1.9 |
| | 18.9 |
| | 4.4 |
| | 1.6 |
| Total Affiliated Revenues | | $ | 147.8 |
| | $ | 27.4 |
| | $ | 84.1 |
| | $ | 4.6 |
| | $ | 16.6 |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2014 | | | | | | | | | | | Sales under Interconnection Agreement (b) | | $ | 0.2 |
| | $ | 0.5 |
| | $ | 1.1 |
| | $ | — |
| | $ | — |
| Direct Sales to East Affiliates | | 141.7 |
| | — |
| | — |
| | 3.8 |
| | 10.1 |
| Direct Sales to West Affiliates | | 0.6 |
| | 0.4 |
| | — |
| | — |
| | 0.3 |
| Direct Sales to AEPEP | | — |
| | — |
| | 44.1 |
| | — |
| | — |
| Transmission Agreement and Transmission Coordination Agreement Sales | | (1.6 | ) | | 1.7 |
| | 104.1 |
| | — |
| | 14.1 |
| Other Revenues | | 3.6 |
| | 1.6 |
| | 15.9 |
| | 3.3 |
| | 1.8 |
| Total Affiliated Revenues | | $ | 144.5 |
| | $ | 4.2 |
| | $ | 165.2 |
| | $ | 7.1 |
| | $ | 26.3 |
|
(a) Refer to the Ohio Auctions section below for further information regarding these amounts. (b) Includes December 2013 true-up activity subsequent to agreement termination. |
Affiliated Purchases |
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2016 | | | | | | | | | | | Direct Purchases from West Affiliates | | — |
| | — |
| | — |
| | 3.7 |
| | — |
| Auction Purchases from AEPEP (a) | | — |
| | — |
| | 110.1 |
| | — |
| | — |
| Auction Purchases from AEP Energy (a) | | — |
| | — |
| | 7.7 |
| | — |
| | — |
| Auction Purchases from AEPSC (a) | | — |
| | — |
| | 24.1 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 228.6 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | — |
| | $ | 228.6 |
| | $ | 141.9 |
| | $ | 3.7 |
| | $ | — |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2015 | | | | | | | | | | | Direct Purchases from AGR(c) | | $ | — |
| | $ | — |
| | $ | 269.2 |
| | $ | — |
| | $ | — |
| Auction Purchases from AEPEP (a) | | — |
| | — |
| | 225.2 |
| | — |
| | — |
| Auction Purchases from AEPSC (a) | | — |
| | — |
| | 32.7 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 232.1 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | — |
| | $ | 232.1 |
| | $ | 527.1 |
| | $ | — |
| | $ | — |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2014 | | | | | | | | | | | Purchases under Interconnection Agreement (b) | | $ | 4.7 |
| | $ | 1.6 |
| | $ | 0.1 |
| | $ | — |
| | $ | — |
| Direct Purchases from East Affiliates | | — |
| | — |
| | — |
| | 1.0 |
| | — |
| Direct Purchases from West Affiliates | | — |
| | — |
| | — |
| | 10.0 |
| | 3.8 |
| Direct Purchases from AGR(c) | | — |
| | — |
| | 1,305.2 |
| | — |
| | — |
| Direct Purchases from AEPEP | | — |
| | — |
| | 44.4 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 268.4 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | 4.7 |
| | $ | 270.0 |
| | $ | 1,349.7 |
| | $ | 11.0 |
| | $ | 3.8 |
|
(a) Refer to the Ohio Auctions section below for further information regarding this amount. (b) Includes December 2013 true-up activity subsequent to agreement termination. |
Transmission Agreement |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 103.2 |
| | $ | 92.7 |
| | $ | 84.7 |
| I&M | | 53.0 |
| | 38.0 |
| | 39.7 |
| OPCo | | 143.6 |
| | 81.0 |
| | 17.0 |
|
|
Barging, Urea Transloading and Other Services |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | AEGCo | | $ | 14.8 |
| | $ | 16.1 |
| | $ | 22.7 |
| AGR | | 0.3 |
| | 4.9 |
| | 5.2 |
| APCo | | 36.9 |
| | 37.7 |
| | 36.1 |
| KPCo | | 5.3 |
| | 4.6 |
| | 5.0 |
| WPCo | | 4.8 |
| | — |
| | — |
| AEP River Operations LLC – (Nonutility Subsidiary of AEP) | | — |
| | 15.5 |
| | 25.3 |
|
|
Central Machine Shop |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | AEGCo | | $ | — |
| | $ | 0.1 |
| | $ | 0.1 |
| AGR | | 2.0 |
| | 2.7 |
| | 2.8 |
| I&M | | 2.9 |
| | 2.5 |
| | 1.7 |
| KPCo | | 1.5 |
| | 1.3 |
| | 1.2 |
| PSO | | 0.5 |
| | 0.2 |
| | 0.3 |
| SWEPCo | | 0.9 |
| | 0.8 |
| | 0.1 |
|
|
Affiliate Railcar Agreement |
| | | | | | | | | | | | | | | | December 31, 2016 | | | Billing Company | | | | | | | | Billed Company | | I&M | | PSO | | SWEPCo | | | | APCo | | $ | — |
| | $ | 0.3 |
| | $ | 0.3 |
| I&M | | — |
| | 0.3 |
| | 0.8 |
| PSO | | 0.3 |
| | — |
| | 0.2 |
| SWEPCo | | 0.9 |
| | 0.3 |
| | — |
|
| | | | | | | | | | | | | | | | December 31, 2015 | | | Billing Company | | | | | | | | Billed Company | | I&M | | PSO | | SWEPCo | | | | APCo | | $ | — |
| | $ | 0.3 |
| | $ | 0.3 |
| I&M | | — |
| | 0.4 |
| | 1.2 |
| PSO | | 0.6 |
| | — |
| | 0.6 |
| SWEPCo | | 1.8 |
| | 0.6 |
| | — |
|
|
Ownership and Investment in OVEC |
| | | | | | | | | | | December 31, 2016 | Company | | Ownership | | Investment | | | | | (in millions) | Parent | | 39.17 | % | | $ | 4.0 |
| OPCo | | 4.30 | % | | 0.4 |
| Total | | 43.47 | % | | $ | 4.4 |
|
|
Purchased Power from OVEC |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 88.0 |
| | $ | 87.2 |
| | $ | 96.9 |
| I&M | | 44.0 |
| | 43.7 |
| | 48.5 |
| OPCo | | 111.7 |
| | 110.8 |
| | 123.1 |
|
|
Related Party Sales of Property |
Sales | | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 4.5 |
| | $ | 9.4 |
| | $ | 3.0 |
| I&M | | 5.2 |
| | 3.0 |
| | 1.3 |
| OPCo | | 1.9 |
| | 2.4 |
| | 0.5 |
| PSO | | 7.5 |
| | 7.1 |
| | 0.5 |
| SWEPCo | | 1.0 |
| | 0.8 |
| | 1.2 |
|
|
Related Party Purchases of Property |
Purchases | | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 1.5 |
| | $ | 8.6 |
| | $ | 0.9 |
| I&M | | 2.7 |
| | 8.1 |
| | 1.4 |
| OPCo | | 1.7 |
| | 2.1 |
| | 1.9 |
| PSO | | 3.2 |
| | 0.6 |
| | 2.1 |
| SWEPCo | | 6.5 |
| | 7.4 |
| | 4.0 |
|
|
Indiana Michigan Power Co [Member] |
|
Affiliated Revenues |
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2016 | | | | | | | | | | | Direct Sales to East Affiliates | | $ | 126.0 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Direct Sales to West Affiliates | | — |
| | — |
| | — |
| | — |
| | 3.7 |
| Auction Sales to OPCo (a) | | 9.2 |
| | 12.0 |
| | — |
| | — |
| | — |
| Direct Sales to AEPEP | | — |
| | — |
| | — |
| | — |
| | (0.2 | ) | Transmission Agreement and Transmission Coordination Agreement Sales | | 1.3 |
| | 12.2 |
| | (2.0 | ) | | (1.7 | ) | | 19.4 |
| Other Revenues | | 5.6 |
| | 2.0 |
| | 19.3 |
| | 4.3 |
| | 1.6 |
| Total Affiliated Revenues | | $ | 142.1 |
| | $ | 26.2 |
| | $ | 17.3 |
| | $ | 2.6 |
| | $ | 24.5 |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2015 | | | | | | | | | | | Direct Sales to East Affiliates | | $ | 132.1 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Auction Sales to OPCo (a) | | 10.6 |
| | 17.1 |
| | — |
| | — |
| | — |
| Direct Sales to AEPEP | | — |
| | — |
| | 29.7 |
| | — |
| | (0.2 | ) | Transmission Agreement and Transmission Coordination Agreement Sales | | 0.7 |
| | 8.4 |
| | 35.5 |
| | 0.2 |
| | 15.2 |
| Other Revenues | | 4.4 |
| | 1.9 |
| | 18.9 |
| | 4.4 |
| | 1.6 |
| Total Affiliated Revenues | | $ | 147.8 |
| | $ | 27.4 |
| | $ | 84.1 |
| | $ | 4.6 |
| | $ | 16.6 |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2014 | | | | | | | | | | | Sales under Interconnection Agreement (b) | | $ | 0.2 |
| | $ | 0.5 |
| | $ | 1.1 |
| | $ | — |
| | $ | — |
| Direct Sales to East Affiliates | | 141.7 |
| | — |
| | — |
| | 3.8 |
| | 10.1 |
| Direct Sales to West Affiliates | | 0.6 |
| | 0.4 |
| | — |
| | — |
| | 0.3 |
| Direct Sales to AEPEP | | — |
| | — |
| | 44.1 |
| | — |
| | — |
| Transmission Agreement and Transmission Coordination Agreement Sales | | (1.6 | ) | | 1.7 |
| | 104.1 |
| | — |
| | 14.1 |
| Other Revenues | | 3.6 |
| | 1.6 |
| | 15.9 |
| | 3.3 |
| | 1.8 |
| Total Affiliated Revenues | | $ | 144.5 |
| | $ | 4.2 |
| | $ | 165.2 |
| | $ | 7.1 |
| | $ | 26.3 |
|
(a) Refer to the Ohio Auctions section below for further information regarding these amounts. (b) Includes December 2013 true-up activity subsequent to agreement termination. |
Affiliated Purchases |
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2016 | | | | | | | | | | | Direct Purchases from West Affiliates | | — |
| | — |
| | — |
| | 3.7 |
| | — |
| Auction Purchases from AEPEP (a) | | — |
| | — |
| | 110.1 |
| | — |
| | — |
| Auction Purchases from AEP Energy (a) | | — |
| | — |
| | 7.7 |
| | — |
| | — |
| Auction Purchases from AEPSC (a) | | — |
| | — |
| | 24.1 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 228.6 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | — |
| | $ | 228.6 |
| | $ | 141.9 |
| | $ | 3.7 |
| | $ | — |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2015 | | | | | | | | | | | Direct Purchases from AGR(c) | | $ | — |
| | $ | — |
| | $ | 269.2 |
| | $ | — |
| | $ | — |
| Auction Purchases from AEPEP (a) | | — |
| | — |
| | 225.2 |
| | — |
| | — |
| Auction Purchases from AEPSC (a) | | — |
| | — |
| | 32.7 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 232.1 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | — |
| | $ | 232.1 |
| | $ | 527.1 |
| | $ | — |
| | $ | — |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2014 | | | | | | | | | | | Purchases under Interconnection Agreement (b) | | $ | 4.7 |
| | $ | 1.6 |
| | $ | 0.1 |
| | $ | — |
| | $ | — |
| Direct Purchases from East Affiliates | | — |
| | — |
| | — |
| | 1.0 |
| | — |
| Direct Purchases from West Affiliates | | — |
| | — |
| | — |
| | 10.0 |
| | 3.8 |
| Direct Purchases from AGR(c) | | — |
| | — |
| | 1,305.2 |
| | — |
| | — |
| Direct Purchases from AEPEP | | — |
| | — |
| | 44.4 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 268.4 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | 4.7 |
| | $ | 270.0 |
| | $ | 1,349.7 |
| | $ | 11.0 |
| | $ | 3.8 |
|
(a) Refer to the Ohio Auctions section below for further information regarding this amount. (b) Includes December 2013 true-up activity subsequent to agreement termination. |
Transmission Agreement |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 103.2 |
| | $ | 92.7 |
| | $ | 84.7 |
| I&M | | 53.0 |
| | 38.0 |
| | 39.7 |
| OPCo | | 143.6 |
| | 81.0 |
| | 17.0 |
|
|
Coal Transloading |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | I&M | | $ | 12.8 |
| | $ | 15.8 |
| | $ | 16.2 |
|
|
Railcar Maintenance |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | I&M | | $ | 1.7 |
| | $ | 2.0 |
| | $ | 2.5 |
| PSO | | 0.6 |
| | 0.2 |
| | 0.3 |
| SWEPCo | | 3.3 |
| | 2.8 |
| | 3.3 |
|
|
Barging, Urea Transloading and Other Services |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | AEGCo | | $ | 14.8 |
| | $ | 16.1 |
| | $ | 22.7 |
| AGR | | 0.3 |
| | 4.9 |
| | 5.2 |
| APCo | | 36.9 |
| | 37.7 |
| | 36.1 |
| KPCo | | 5.3 |
| | 4.6 |
| | 5.0 |
| WPCo | | 4.8 |
| | — |
| | — |
| AEP River Operations LLC – (Nonutility Subsidiary of AEP) | | — |
| | 15.5 |
| | 25.3 |
|
|
Central Machine Shop |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | AEGCo | | $ | — |
| | $ | 0.1 |
| | $ | 0.1 |
| AGR | | 2.0 |
| | 2.7 |
| | 2.8 |
| I&M | | 2.9 |
| | 2.5 |
| | 1.7 |
| KPCo | | 1.5 |
| | 1.3 |
| | 1.2 |
| PSO | | 0.5 |
| | 0.2 |
| | 0.3 |
| SWEPCo | | 0.9 |
| | 0.8 |
| | 0.1 |
|
|
Affiliate Railcar Agreement |
| | | | | | | | | | | | | | | | December 31, 2016 | | | Billing Company | | | | | | | | Billed Company | | I&M | | PSO | | SWEPCo | | | | APCo | | $ | — |
| | $ | 0.3 |
| | $ | 0.3 |
| I&M | | — |
| | 0.3 |
| | 0.8 |
| PSO | | 0.3 |
| | — |
| | 0.2 |
| SWEPCo | | 0.9 |
| | 0.3 |
| | — |
|
| | | | | | | | | | | | | | | | December 31, 2015 | | | Billing Company | | | | | | | | Billed Company | | I&M | | PSO | | SWEPCo | | | | APCo | | $ | — |
| | $ | 0.3 |
| | $ | 0.3 |
| I&M | | — |
| | 0.4 |
| | 1.2 |
| PSO | | 0.6 |
| | — |
| | 0.6 |
| SWEPCo | | 1.8 |
| | 0.6 |
| | — |
|
|
Ownership and Investment in OVEC |
| | | | | | | | | | | December 31, 2016 | Company | | Ownership | | Investment | | | | | (in millions) | Parent | | 39.17 | % | | $ | 4.0 |
| OPCo | | 4.30 | % | | 0.4 |
| Total | | 43.47 | % | | $ | 4.4 |
|
|
Purchased Power from OVEC |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 88.0 |
| | $ | 87.2 |
| | $ | 96.9 |
| I&M | | 44.0 |
| | 43.7 |
| | 48.5 |
| OPCo | | 111.7 |
| | 110.8 |
| | 123.1 |
|
|
Related Party Sales of Property |
Sales | | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 4.5 |
| | $ | 9.4 |
| | $ | 3.0 |
| I&M | | 5.2 |
| | 3.0 |
| | 1.3 |
| OPCo | | 1.9 |
| | 2.4 |
| | 0.5 |
| PSO | | 7.5 |
| | 7.1 |
| | 0.5 |
| SWEPCo | | 1.0 |
| | 0.8 |
| | 1.2 |
|
|
Related Party Purchases of Property |
Purchases | | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 1.5 |
| | $ | 8.6 |
| | $ | 0.9 |
| I&M | | 2.7 |
| | 8.1 |
| | 1.4 |
| OPCo | | 1.7 |
| | 2.1 |
| | 1.9 |
| PSO | | 3.2 |
| | 0.6 |
| | 2.1 |
| SWEPCo | | 6.5 |
| | 7.4 |
| | 4.0 |
|
|
Ohio Power Co [Member] |
|
Affiliated Revenues |
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2016 | | | | | | | | | | | Direct Sales to East Affiliates | | $ | 126.0 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Direct Sales to West Affiliates | | — |
| | — |
| | — |
| | — |
| | 3.7 |
| Auction Sales to OPCo (a) | | 9.2 |
| | 12.0 |
| | — |
| | — |
| | — |
| Direct Sales to AEPEP | | — |
| | — |
| | — |
| | — |
| | (0.2 | ) | Transmission Agreement and Transmission Coordination Agreement Sales | | 1.3 |
| | 12.2 |
| | (2.0 | ) | | (1.7 | ) | | 19.4 |
| Other Revenues | | 5.6 |
| | 2.0 |
| | 19.3 |
| | 4.3 |
| | 1.6 |
| Total Affiliated Revenues | | $ | 142.1 |
| | $ | 26.2 |
| | $ | 17.3 |
| | $ | 2.6 |
| | $ | 24.5 |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2015 | | | | | | | | | | | Direct Sales to East Affiliates | | $ | 132.1 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Auction Sales to OPCo (a) | | 10.6 |
| | 17.1 |
| | — |
| | — |
| | — |
| Direct Sales to AEPEP | | — |
| | — |
| | 29.7 |
| | — |
| | (0.2 | ) | Transmission Agreement and Transmission Coordination Agreement Sales | | 0.7 |
| | 8.4 |
| | 35.5 |
| | 0.2 |
| | 15.2 |
| Other Revenues | | 4.4 |
| | 1.9 |
| | 18.9 |
| | 4.4 |
| | 1.6 |
| Total Affiliated Revenues | | $ | 147.8 |
| | $ | 27.4 |
| | $ | 84.1 |
| | $ | 4.6 |
| | $ | 16.6 |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2014 | | | | | | | | | | | Sales under Interconnection Agreement (b) | | $ | 0.2 |
| | $ | 0.5 |
| | $ | 1.1 |
| | $ | — |
| | $ | — |
| Direct Sales to East Affiliates | | 141.7 |
| | — |
| | — |
| | 3.8 |
| | 10.1 |
| Direct Sales to West Affiliates | | 0.6 |
| | 0.4 |
| | — |
| | — |
| | 0.3 |
| Direct Sales to AEPEP | | — |
| | — |
| | 44.1 |
| | — |
| | — |
| Transmission Agreement and Transmission Coordination Agreement Sales | | (1.6 | ) | | 1.7 |
| | 104.1 |
| | — |
| | 14.1 |
| Other Revenues | | 3.6 |
| | 1.6 |
| | 15.9 |
| | 3.3 |
| | 1.8 |
| Total Affiliated Revenues | | $ | 144.5 |
| | $ | 4.2 |
| | $ | 165.2 |
| | $ | 7.1 |
| | $ | 26.3 |
|
(a) Refer to the Ohio Auctions section below for further information regarding these amounts. (b) Includes December 2013 true-up activity subsequent to agreement termination. |
Affiliated Purchases |
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2016 | | | | | | | | | | | Direct Purchases from West Affiliates | | — |
| | — |
| | — |
| | 3.7 |
| | — |
| Auction Purchases from AEPEP (a) | | — |
| | — |
| | 110.1 |
| | — |
| | — |
| Auction Purchases from AEP Energy (a) | | — |
| | — |
| | 7.7 |
| | — |
| | — |
| Auction Purchases from AEPSC (a) | | — |
| | — |
| | 24.1 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 228.6 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | — |
| | $ | 228.6 |
| | $ | 141.9 |
| | $ | 3.7 |
| | $ | — |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2015 | | | | | | | | | | | Direct Purchases from AGR(c) | | $ | — |
| | $ | — |
| | $ | 269.2 |
| | $ | — |
| | $ | — |
| Auction Purchases from AEPEP (a) | | — |
| | — |
| | 225.2 |
| | — |
| | — |
| Auction Purchases from AEPSC (a) | | — |
| | — |
| | 32.7 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 232.1 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | — |
| | $ | 232.1 |
| | $ | 527.1 |
| | $ | — |
| | $ | — |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2014 | | | | | | | | | | | Purchases under Interconnection Agreement (b) | | $ | 4.7 |
| | $ | 1.6 |
| | $ | 0.1 |
| | $ | — |
| | $ | — |
| Direct Purchases from East Affiliates | | — |
| | — |
| | — |
| | 1.0 |
| | — |
| Direct Purchases from West Affiliates | | — |
| | — |
| | — |
| | 10.0 |
| | 3.8 |
| Direct Purchases from AGR(c) | | — |
| | — |
| | 1,305.2 |
| | — |
| | — |
| Direct Purchases from AEPEP | | — |
| | — |
| | 44.4 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 268.4 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | 4.7 |
| | $ | 270.0 |
| | $ | 1,349.7 |
| | $ | 11.0 |
| | $ | 3.8 |
|
(a) Refer to the Ohio Auctions section below for further information regarding this amount. (b) Includes December 2013 true-up activity subsequent to agreement termination. |
Transmission Agreement |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 103.2 |
| | $ | 92.7 |
| | $ | 84.7 |
| I&M | | 53.0 |
| | 38.0 |
| | 39.7 |
| OPCo | | 143.6 |
| | 81.0 |
| | 17.0 |
|
|
Ownership and Investment in OVEC |
| | | | | | | | | | | December 31, 2016 | Company | | Ownership | | Investment | | | | | (in millions) | Parent | | 39.17 | % | | $ | 4.0 |
| OPCo | | 4.30 | % | | 0.4 |
| Total | | 43.47 | % | | $ | 4.4 |
|
|
Purchased Power from OVEC |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 88.0 |
| | $ | 87.2 |
| | $ | 96.9 |
| I&M | | 44.0 |
| | 43.7 |
| | 48.5 |
| OPCo | | 111.7 |
| | 110.8 |
| | 123.1 |
|
|
Related Party Sales of Property |
Sales | | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 4.5 |
| | $ | 9.4 |
| | $ | 3.0 |
| I&M | | 5.2 |
| | 3.0 |
| | 1.3 |
| OPCo | | 1.9 |
| | 2.4 |
| | 0.5 |
| PSO | | 7.5 |
| | 7.1 |
| | 0.5 |
| SWEPCo | | 1.0 |
| | 0.8 |
| | 1.2 |
|
|
Related Party Purchases of Property |
Purchases | | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 1.5 |
| | $ | 8.6 |
| | $ | 0.9 |
| I&M | | 2.7 |
| | 8.1 |
| | 1.4 |
| OPCo | | 1.7 |
| | 2.1 |
| | 1.9 |
| PSO | | 3.2 |
| | 0.6 |
| | 2.1 |
| SWEPCo | | 6.5 |
| | 7.4 |
| | 4.0 |
|
|
Public Service Co Of Oklahoma [Member] |
|
Affiliated Revenues |
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2016 | | | | | | | | | | | Direct Sales to East Affiliates | | $ | 126.0 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Direct Sales to West Affiliates | | — |
| | — |
| | — |
| | — |
| | 3.7 |
| Auction Sales to OPCo (a) | | 9.2 |
| | 12.0 |
| | — |
| | — |
| | — |
| Direct Sales to AEPEP | | — |
| | — |
| | — |
| | — |
| | (0.2 | ) | Transmission Agreement and Transmission Coordination Agreement Sales | | 1.3 |
| | 12.2 |
| | (2.0 | ) | | (1.7 | ) | | 19.4 |
| Other Revenues | | 5.6 |
| | 2.0 |
| | 19.3 |
| | 4.3 |
| | 1.6 |
| Total Affiliated Revenues | | $ | 142.1 |
| | $ | 26.2 |
| | $ | 17.3 |
| | $ | 2.6 |
| | $ | 24.5 |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2015 | | | | | | | | | | | Direct Sales to East Affiliates | | $ | 132.1 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Auction Sales to OPCo (a) | | 10.6 |
| | 17.1 |
| | — |
| | — |
| | — |
| Direct Sales to AEPEP | | — |
| | — |
| | 29.7 |
| | — |
| | (0.2 | ) | Transmission Agreement and Transmission Coordination Agreement Sales | | 0.7 |
| | 8.4 |
| | 35.5 |
| | 0.2 |
| | 15.2 |
| Other Revenues | | 4.4 |
| | 1.9 |
| | 18.9 |
| | 4.4 |
| | 1.6 |
| Total Affiliated Revenues | | $ | 147.8 |
| | $ | 27.4 |
| | $ | 84.1 |
| | $ | 4.6 |
| | $ | 16.6 |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2014 | | | | | | | | | | | Sales under Interconnection Agreement (b) | | $ | 0.2 |
| | $ | 0.5 |
| | $ | 1.1 |
| | $ | — |
| | $ | — |
| Direct Sales to East Affiliates | | 141.7 |
| | — |
| | — |
| | 3.8 |
| | 10.1 |
| Direct Sales to West Affiliates | | 0.6 |
| | 0.4 |
| | — |
| | — |
| | 0.3 |
| Direct Sales to AEPEP | | — |
| | — |
| | 44.1 |
| | — |
| | — |
| Transmission Agreement and Transmission Coordination Agreement Sales | | (1.6 | ) | | 1.7 |
| | 104.1 |
| | — |
| | 14.1 |
| Other Revenues | | 3.6 |
| | 1.6 |
| | 15.9 |
| | 3.3 |
| | 1.8 |
| Total Affiliated Revenues | | $ | 144.5 |
| | $ | 4.2 |
| | $ | 165.2 |
| | $ | 7.1 |
| | $ | 26.3 |
|
(a) Refer to the Ohio Auctions section below for further information regarding these amounts. (b) Includes December 2013 true-up activity subsequent to agreement termination. |
Affiliated Purchases |
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2016 | | | | | | | | | | | Direct Purchases from West Affiliates | | — |
| | — |
| | — |
| | 3.7 |
| | — |
| Auction Purchases from AEPEP (a) | | — |
| | — |
| | 110.1 |
| | — |
| | — |
| Auction Purchases from AEP Energy (a) | | — |
| | — |
| | 7.7 |
| | — |
| | — |
| Auction Purchases from AEPSC (a) | | — |
| | — |
| | 24.1 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 228.6 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | — |
| | $ | 228.6 |
| | $ | 141.9 |
| | $ | 3.7 |
| | $ | — |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2015 | | | | | | | | | | | Direct Purchases from AGR(c) | | $ | — |
| | $ | — |
| | $ | 269.2 |
| | $ | — |
| | $ | — |
| Auction Purchases from AEPEP (a) | | — |
| | — |
| | 225.2 |
| | — |
| | — |
| Auction Purchases from AEPSC (a) | | — |
| | — |
| | 32.7 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 232.1 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | — |
| | $ | 232.1 |
| | $ | 527.1 |
| | $ | — |
| | $ | — |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2014 | | | | | | | | | | | Purchases under Interconnection Agreement (b) | | $ | 4.7 |
| | $ | 1.6 |
| | $ | 0.1 |
| | $ | — |
| | $ | — |
| Direct Purchases from East Affiliates | | — |
| | — |
| | — |
| | 1.0 |
| | — |
| Direct Purchases from West Affiliates | | — |
| | — |
| | — |
| | 10.0 |
| | 3.8 |
| Direct Purchases from AGR(c) | | — |
| | — |
| | 1,305.2 |
| | — |
| | — |
| Direct Purchases from AEPEP | | — |
| | — |
| | 44.4 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 268.4 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | 4.7 |
| | $ | 270.0 |
| | $ | 1,349.7 |
| | $ | 11.0 |
| | $ | 3.8 |
|
(a) Refer to the Ohio Auctions section below for further information regarding this amount. (b) Includes December 2013 true-up activity subsequent to agreement termination. |
Transmission Coordination Agreement |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | PSO | | $ | 19.6 |
| | $ | 15.0 |
| | $ | 14.1 |
| SWEPCo | | (19.6 | ) | | (15.0 | ) | | (14.1 | ) |
|
Railcar Maintenance |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | I&M | | $ | 1.7 |
| | $ | 2.0 |
| | $ | 2.5 |
| PSO | | 0.6 |
| | 0.2 |
| | 0.3 |
| SWEPCo | | 3.3 |
| | 2.8 |
| | 3.3 |
|
|
Central Machine Shop |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | AEGCo | | $ | — |
| | $ | 0.1 |
| | $ | 0.1 |
| AGR | | 2.0 |
| | 2.7 |
| | 2.8 |
| I&M | | 2.9 |
| | 2.5 |
| | 1.7 |
| KPCo | | 1.5 |
| | 1.3 |
| | 1.2 |
| PSO | | 0.5 |
| | 0.2 |
| | 0.3 |
| SWEPCo | | 0.9 |
| | 0.8 |
| | 0.1 |
|
|
Affiliate Railcar Agreement |
| | | | | | | | | | | | | | | | December 31, 2016 | | | Billing Company | | | | | | | | Billed Company | | I&M | | PSO | | SWEPCo | | | | APCo | | $ | — |
| | $ | 0.3 |
| | $ | 0.3 |
| I&M | | — |
| | 0.3 |
| | 0.8 |
| PSO | | 0.3 |
| | — |
| | 0.2 |
| SWEPCo | | 0.9 |
| | 0.3 |
| | — |
|
| | | | | | | | | | | | | | | | December 31, 2015 | | | Billing Company | | | | | | | | Billed Company | | I&M | | PSO | | SWEPCo | | | | APCo | | $ | — |
| | $ | 0.3 |
| | $ | 0.3 |
| I&M | | — |
| | 0.4 |
| | 1.2 |
| PSO | | 0.6 |
| | — |
| | 0.6 |
| SWEPCo | | 1.8 |
| | 0.6 |
| | — |
|
|
Related Party Sales of Property |
Sales | | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 4.5 |
| | $ | 9.4 |
| | $ | 3.0 |
| I&M | | 5.2 |
| | 3.0 |
| | 1.3 |
| OPCo | | 1.9 |
| | 2.4 |
| | 0.5 |
| PSO | | 7.5 |
| | 7.1 |
| | 0.5 |
| SWEPCo | | 1.0 |
| | 0.8 |
| | 1.2 |
|
|
Related Party Purchases of Property |
Purchases | | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 1.5 |
| | $ | 8.6 |
| | $ | 0.9 |
| I&M | | 2.7 |
| | 8.1 |
| | 1.4 |
| OPCo | | 1.7 |
| | 2.1 |
| | 1.9 |
| PSO | | 3.2 |
| | 0.6 |
| | 2.1 |
| SWEPCo | | 6.5 |
| | 7.4 |
| | 4.0 |
|
|
Southwestern Electric Power Co [Member] |
|
Affiliated Revenues |
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2016 | | | | | | | | | | | Direct Sales to East Affiliates | | $ | 126.0 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Direct Sales to West Affiliates | | — |
| | — |
| | — |
| | — |
| | 3.7 |
| Auction Sales to OPCo (a) | | 9.2 |
| | 12.0 |
| | — |
| | — |
| | — |
| Direct Sales to AEPEP | | — |
| | — |
| | — |
| | — |
| | (0.2 | ) | Transmission Agreement and Transmission Coordination Agreement Sales | | 1.3 |
| | 12.2 |
| | (2.0 | ) | | (1.7 | ) | | 19.4 |
| Other Revenues | | 5.6 |
| | 2.0 |
| | 19.3 |
| | 4.3 |
| | 1.6 |
| Total Affiliated Revenues | | $ | 142.1 |
| | $ | 26.2 |
| | $ | 17.3 |
| | $ | 2.6 |
| | $ | 24.5 |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2015 | | | | | | | | | | | Direct Sales to East Affiliates | | $ | 132.1 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | — |
| Auction Sales to OPCo (a) | | 10.6 |
| | 17.1 |
| | — |
| | — |
| | — |
| Direct Sales to AEPEP | | — |
| | — |
| | 29.7 |
| | — |
| | (0.2 | ) | Transmission Agreement and Transmission Coordination Agreement Sales | | 0.7 |
| | 8.4 |
| | 35.5 |
| | 0.2 |
| | 15.2 |
| Other Revenues | | 4.4 |
| | 1.9 |
| | 18.9 |
| | 4.4 |
| | 1.6 |
| Total Affiliated Revenues | | $ | 147.8 |
| | $ | 27.4 |
| | $ | 84.1 |
| | $ | 4.6 |
| | $ | 16.6 |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Revenues | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2014 | | | | | | | | | | | Sales under Interconnection Agreement (b) | | $ | 0.2 |
| | $ | 0.5 |
| | $ | 1.1 |
| | $ | — |
| | $ | — |
| Direct Sales to East Affiliates | | 141.7 |
| | — |
| | — |
| | 3.8 |
| | 10.1 |
| Direct Sales to West Affiliates | | 0.6 |
| | 0.4 |
| | — |
| | — |
| | 0.3 |
| Direct Sales to AEPEP | | — |
| | — |
| | 44.1 |
| | — |
| | — |
| Transmission Agreement and Transmission Coordination Agreement Sales | | (1.6 | ) | | 1.7 |
| | 104.1 |
| | — |
| | 14.1 |
| Other Revenues | | 3.6 |
| | 1.6 |
| | 15.9 |
| | 3.3 |
| | 1.8 |
| Total Affiliated Revenues | | $ | 144.5 |
| | $ | 4.2 |
| | $ | 165.2 |
| | $ | 7.1 |
| | $ | 26.3 |
|
(a) Refer to the Ohio Auctions section below for further information regarding these amounts. (b) Includes December 2013 true-up activity subsequent to agreement termination. |
Affiliated Purchases |
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2016 | | | | | | | | | | | Direct Purchases from West Affiliates | | — |
| | — |
| | — |
| | 3.7 |
| | — |
| Auction Purchases from AEPEP (a) | | — |
| | — |
| | 110.1 |
| | — |
| | — |
| Auction Purchases from AEP Energy (a) | | — |
| | — |
| | 7.7 |
| | — |
| | — |
| Auction Purchases from AEPSC (a) | | — |
| | — |
| | 24.1 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 228.6 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | — |
| | $ | 228.6 |
| | $ | 141.9 |
| | $ | 3.7 |
| | $ | — |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2015 | | | | | | | | | | | Direct Purchases from AGR(c) | | $ | — |
| | $ | — |
| | $ | 269.2 |
| | $ | — |
| | $ | — |
| Auction Purchases from AEPEP (a) | | — |
| | — |
| | 225.2 |
| | — |
| | — |
| Auction Purchases from AEPSC (a) | | — |
| | — |
| | 32.7 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 232.1 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | — |
| | $ | 232.1 |
| | $ | 527.1 |
| | $ | — |
| | $ | — |
|
| | | | | | | | | | | | | | | | | | | | | | Related Party Purchases | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | | (in millions) | Year Ended December 31, 2014 | | | | | | | | | | | Purchases under Interconnection Agreement (b) | | $ | 4.7 |
| | $ | 1.6 |
| | $ | 0.1 |
| | $ | — |
| | $ | — |
| Direct Purchases from East Affiliates | | — |
| | — |
| | — |
| | 1.0 |
| | — |
| Direct Purchases from West Affiliates | | — |
| | — |
| | — |
| | 10.0 |
| | 3.8 |
| Direct Purchases from AGR(c) | | — |
| | — |
| | 1,305.2 |
| | — |
| | — |
| Direct Purchases from AEPEP | | — |
| | — |
| | 44.4 |
| | — |
| | — |
| Direct Purchases from AEGCo | | — |
| | 268.4 |
| | — |
| | — |
| | — |
| Total Affiliated Purchases | | $ | 4.7 |
| | $ | 270.0 |
| | $ | 1,349.7 |
| | $ | 11.0 |
| | $ | 3.8 |
|
(a) Refer to the Ohio Auctions section below for further information regarding this amount. (b) Includes December 2013 true-up activity subsequent to agreement termination. |
Transmission Coordination Agreement |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | PSO | | $ | 19.6 |
| | $ | 15.0 |
| | $ | 14.1 |
| SWEPCo | | (19.6 | ) | | (15.0 | ) | | (14.1 | ) |
|
Railcar Maintenance |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | I&M | | $ | 1.7 |
| | $ | 2.0 |
| | $ | 2.5 |
| PSO | | 0.6 |
| | 0.2 |
| | 0.3 |
| SWEPCo | | 3.3 |
| | 2.8 |
| | 3.3 |
|
|
Central Machine Shop |
| | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | AEGCo | | $ | — |
| | $ | 0.1 |
| | $ | 0.1 |
| AGR | | 2.0 |
| | 2.7 |
| | 2.8 |
| I&M | | 2.9 |
| | 2.5 |
| | 1.7 |
| KPCo | | 1.5 |
| | 1.3 |
| | 1.2 |
| PSO | | 0.5 |
| | 0.2 |
| | 0.3 |
| SWEPCo | | 0.9 |
| | 0.8 |
| | 0.1 |
|
|
Affiliate Railcar Agreement |
| | | | | | | | | | | | | | | | December 31, 2016 | | | Billing Company | | | | | | | | Billed Company | | I&M | | PSO | | SWEPCo | | | | APCo | | $ | — |
| | $ | 0.3 |
| | $ | 0.3 |
| I&M | | — |
| | 0.3 |
| | 0.8 |
| PSO | | 0.3 |
| | — |
| | 0.2 |
| SWEPCo | | 0.9 |
| | 0.3 |
| | — |
|
| | | | | | | | | | | | | | | | December 31, 2015 | | | Billing Company | | | | | | | | Billed Company | | I&M | | PSO | | SWEPCo | | | | APCo | | $ | — |
| | $ | 0.3 |
| | $ | 0.3 |
| I&M | | — |
| | 0.4 |
| | 1.2 |
| PSO | | 0.6 |
| | — |
| | 0.6 |
| SWEPCo | | 1.8 |
| | 0.6 |
| | — |
|
|
Related Party Sales of Property |
Sales | | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 4.5 |
| | $ | 9.4 |
| | $ | 3.0 |
| I&M | | 5.2 |
| | 3.0 |
| | 1.3 |
| OPCo | | 1.9 |
| | 2.4 |
| | 0.5 |
| PSO | | 7.5 |
| | 7.1 |
| | 0.5 |
| SWEPCo | | 1.0 |
| | 0.8 |
| | 1.2 |
|
|
Related Party Purchases of Property |
Purchases | | | | | | | | | | | | | | | | Years Ended December 31, | Company | | 2016 | | 2015 | | 2014 | | | (in millions) | APCo | | $ | 1.5 |
| | $ | 8.6 |
| | $ | 0.9 |
| I&M | | 2.7 |
| | 8.1 |
| | 1.4 |
| OPCo | | 1.7 |
| | 2.1 |
| | 1.9 |
| PSO | | 3.2 |
| | 0.6 |
| | 2.1 |
| SWEPCo | | 6.5 |
| | 7.4 |
| | 4.0 |
|
|