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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Operating Activites      
Net Income (Loss) $ 2,488.1 $ 2,196.7 $ 1,919.8
Adjustments to Reconcile Net Income to Net Cash Flows from (Used for) Operating Activities:      
Depreciation and Amortization 2,825.7 2,682.8 2,514.5
Rockport Plant, Unit 2 Lease Amortization 135.4 136.5 136.5
Deferred Income Taxes 107.6 196.1 (17.8)
Asset Impairments and Other Related Charges 11.6 0.0 156.4
Allowance for Equity Funds Used During Construction (139.7) (148.1) (168.4)
Mark-to-Market of Risk Management Contracts 112.3 66.5 (29.2)
Amortization of Nuclear Fuel 85.3 87.5 89.1
Pension and Postemployment Benefit Reserves 6.1 (8.5) (24.6)
Pension Contributions to Qualified Plan Trust 0.0 (110.3) 0.0
Property Taxes (68.0) (43.3) (73.8)
Deferred Fuel Over/Under-Recovery, Net (1,647.9) (31.8) 85.2
Change in Regulatory Assets (238.9) (337.9) 49.5
Change in Other Noncurrent Assets (132.7) (142.5) (112.8)
Change in Other Noncurrent Liabilities 206.4 (54.5) (116.1)
Changes in Certain Components of Working Capital:      
Accounts Receivable, Net (119.7) (129.3) 247.8
Fuel, Materials and Supplies 300.2 (142.9) (248.2)
Increase (Decrease) in Margin Deposits Outstanding (70.0) 2.8 8.1
Accounts Payable 200.6 (35.3) 5.8
Accrued Taxes, Net 218.7 20.1 138.9
Rockport Plant, Unit 2 Operating Lease Payments (147.7) (147.7) (147.7)
Other Current Assets (151.3) 34.3 70.7
Other Current Liabilities (212.2) (255.5) (205.5)
Net Cash Flows from Operating Activities 3,839.9 3,832.9 4,270.1
Investing Activities      
Construction Expenditures (5,659.6) (6,246.3) (6,051.4)
Purchases of Investment Securities (1,955.1) (1,678.8) (1,576.0)
Sales of Investment Securities 1,901.4 1,644.3 1,494.2
Acquisitions of Nuclear Fuel (104.5) (69.7) (92.3)
Other Investing Activities 151.1 116.6 (0.6)
Net Cash Flows Used for Investing Activities (6,433.9) (6,233.9) (7,144.5)
Financing Activities      
Issuance of Common Stock, Net 600.5 155.0 65.3
Issuance of Long-term Debt 6,486.3 5,626.1 4,536.6
Issuance of Short-term Debt with Original Maturities Greater Than 90 Days 1,393.3 1,396.5 0.0
Change in Short-term Debt with Original Maturities Less Than 90 Days, Net (487.3) (448.4) 928.3
Retirement of Long-term Debt (2,989.3) (1,339.8) (1,220.8)
Redemption of Short-term Debt with Original Maturities Greater Than 90 Days (771.3) (1,307.1) 0.0
Principal Payments for Finance Lease Obligations (64.0) (61.7) (70.7)
Dividends Paid on Common Stock (1,519.5) (1,424.9) (1,350.0)
Redemption of Noncontrolling Interest 0.0 (100.2) 0.0
Other Financing Activities (41.6) (88.8) (25.8)
Net Cash Flows from Financing Activities 2,607.1 2,406.7 2,862.9
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash 13.1 5.7 (11.5)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period 438.3 432.6 444.1
Cash and Cash Equivalents at Beginning of Period 392.7    
Cash, Cash Equivalents and Restricted Cash at End of Period 451.4 438.3 432.6
Cash and Cash Equivalents at End of Period 403.4 392.7  
Supplementary Information      
Cash Paid for Interest, Net of Capitalized Amounts 1,137.2 1,029.1 1,022.5
Net Cash Paid (Received) for Income Taxes 13.2 (49.1) 6.1
Construction Expenditures Included in Current Liabilities as of December 31, 1,180.4 975.4 1,341.1
Acquisition of Nuclear Fuel Included in Current Liabilities as of December 31, 0.0 33.4 0.1
Expected Reimbursement For Spent Nuclear Fuel Dry Cask Storage 1.7 2.6 0.3
North Central Wind Energy Facilities      
Investing Activities      
Acquisition of Assets 652.8 0.0 0.0
Dry Lake Solar Project [Member]      
Investing Activities      
Acquisition of Assets 114.4 0.0 0.0
Sempra Renewable LLC and Santa Rita      
Investing Activities      
Acquisition of Assets 0.0 0.0 (918.4)
AEP Texas Inc. [Member]      
Operating Activites      
Net Income (Loss) 289.8 241.0 178.3
Adjustments to Reconcile Net Income to Net Cash Flows from (Used for) Operating Activities:      
Depreciation and Amortization 387.0 529.8 622.3
Deferred Income Taxes 43.0 (15.2) (23.5)
Asset Impairments and Other Related Charges 0.0 0.0 32.5
Allowance for Equity Funds Used During Construction (21.5) (19.4) (15.2)
Mark-to-Market of Risk Management Contracts 0.0 0.0 (0.2)
Pension Contributions to Qualified Plan Trust 0.0 (11.3) 0.0
Change in Other Noncurrent Assets (78.2) (74.0) 9.3
Change in Other Noncurrent Liabilities 26.4 (24.7) 11.3
Changes in Certain Components of Working Capital:      
Accounts Receivable, Net (21.6) 9.8 3.5
Fuel, Materials and Supplies (3.9) (7.4) (1.0)
Accounts Payable 8.9 30.2 7.5
Accrued Taxes, Net 7.0 42.7 (11.8)
Other Current Assets (0.9) 0.8 (0.4)
Other Current Liabilities (39.4) (88.1) 10.8
Net Cash Flows from Operating Activities 596.6 614.2 823.4
Investing Activities      
Construction Expenditures (1,033.3) (1,295.0) (1,275.1)
Change in Advances to Affiliates, Net 0.2 200.1 (199.2)
Other Investing Activities 32.3 29.5 2.1
Net Cash Flows Used for Investing Activities (1,000.8) (1,065.4) (1,472.2)
Financing Activities      
Capital Contributions from Member 96.0 0.0 200.0
Issuance of Long-term Debt 444.2 652.7 1,070.4
Change in Advances from Affiliates, Net (40.2) 67.1 (216.0)
Retirement of Long-term Debt (88.7) (392.1) (401.8)
Principal Payments for Finance Lease Obligations (6.7) (6.3) (5.1)
Other Financing Activities 1.3 0.8 (0.7)
Net Cash Flows from Financing Activities 405.9 322.2 646.8
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash 1.7 (129.0) (2.0)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period 28.8 157.8 159.8
Cash and Cash Equivalents at Beginning of Period 0.1    
Cash, Cash Equivalents and Restricted Cash at End of Period 30.5 28.8 157.8
Cash and Cash Equivalents at End of Period 0.1 0.1  
Supplementary Information      
Cash Paid for Interest, Net of Capitalized Amounts 168.9 153.2 148.6
Net Cash Paid (Received) for Income Taxes 5.7 (42.9) (11.0)
Noncash Acquisitions Under Finance Leases 4.4 5.6 11.4
Construction Expenditures Included in Current Liabilities as of December 31, 230.0 177.8 225.5
AEP Transmission Co [Member]      
Operating Activites      
Net Income (Loss) 591.7 423.4 439.7
Adjustments to Reconcile Net Income to Net Cash Flows from (Used for) Operating Activities:      
Depreciation and Amortization 297.3 249.0 176.0
Deferred Income Taxes 68.5 81.6 91.3
Allowance for Equity Funds Used During Construction (67.2) (74.0) (84.3)
Property Taxes (25.6) (26.6) (35.6)
Change in Other Noncurrent Assets 7.5 (8.2) 9.6
Change in Other Noncurrent Liabilities 3.7 8.3 (8.1)
Changes in Certain Components of Working Capital:      
Accounts Receivable, Net (16.0) (19.0) (5.4)
Fuel, Materials and Supplies (0.8) 5.3 5.2
Accounts Payable (2.2) 77.8 37.6
Accrued Taxes, Net 67.2 62.7 90.8
Accrued Interest 4.8 4.7 3.3
Other Current Assets 1.2 0.7 (0.3)
Other Current Liabilities (4.4) (14.5) (11.2)
Net Cash Flows from Operating Activities 925.7 771.2 708.6
Investing Activities      
Construction Expenditures (1,424.8) (1,615.9) (1,410.1)
Change in Advances to Affiliates, Net 81.9 (23.7) 11.5
Acquisition of Assets (17.9) (6.0) (9.4)
Other Investing Activities 1.8 5.2 4.8
Net Cash Flows Used for Investing Activities (1,359.0) (1,640.4) (1,403.2)
Financing Activities      
Capital Contributions from Member 184.0 335.0 0.0
Issuance of Long-term Debt 443.7 519.5 688.0
Change in Advances from Affiliates, Net (31.9) 19.7 91.6
Retirement of Long-term Debt (50.0) 0.0 (85.0)
Principal Payments for Finance Lease Obligations 0.0 0.0  
Dividends Paid on Common Stock (112.5) (5.0) 0.0
Net Cash Flows from Financing Activities 433.3 869.2 694.6
Net Increase (Decrease) in Cash and Cash Equivalents 0.0 0.0 0.0
Cash and Cash Equivalents at Beginning of Period 0.0 0.0 0.0
Cash and Cash Equivalents at End of Period 0.0 0.0 0.0
Supplementary Information      
Cash Paid for Interest, Net of Capitalized Amounts 132.9 119.7 90.6
Net Cash Paid (Received) for Income Taxes 65.7 22.9 1.5
Construction Expenditures Included in Current Liabilities as of December 31, 358.7 311.9 472.7
Noncash Distribution of Radial Assets to Member 0.0 (50.0) 0.0
Appalachian Power Co [Member]      
Operating Activites      
Net Income (Loss) 348.9 369.7 306.3
Adjustments to Reconcile Net Income to Net Cash Flows from (Used for) Operating Activities:      
Depreciation and Amortization 546.2 507.5 466.8
Deferred Income Taxes 15.0 (26.2) (126.2)
Asset Impairments and Other Related Charges 0.0 0.0 92.9
Allowance for Equity Funds Used During Construction (15.6) (14.6) (16.6)
Mark-to-Market of Risk Management Contracts (22.3) 18.8 19.9
Pension Contributions to Qualified Plan Trust 0.0 (7.0) 0.0
Deferred Fuel Over/Under-Recovery, Net (196.0) 37.2 57.1
Re-Establishment of Regulatory Asset - Coal Fired Generation 0.0 (49.0) 0.0
Change in Other Noncurrent Assets (68.8) (40.4) (38.2)
Change in Other Noncurrent Liabilities 35.6 11.2 (40.3)
Changes in Certain Components of Working Capital:      
Accounts Receivable, Net (53.3) (30.2) 35.7
Fuel, Materials and Supplies 116.1 (38.2) (93.4)
Accounts Payable 36.8 (48.1) 37.7
Accrued Taxes, Net (16.2) 31.3 (10.2)
Other Current Assets (2.4) 15.5 7.3
Other Current Liabilities (42.3) (28.3) (45.5)
Net Cash Flows from Operating Activities 611.7 712.0 661.4
Investing Activities      
Construction Expenditures (841.6) (767.4) (862.6)
Change in Advances to Affiliates, Net 0.6 0.7 0.9
Other Investing Activities 14.5 8.8 24.3
Net Cash Flows Used for Investing Activities (826.5) (757.9) (837.4)
Financing Activities      
Issuance of Long-term Debt 494.0 606.9 478.2
Change in Advances from Affiliates, Net 180.7 (218.1) 31.1
Retirement of Long-term Debt (393.0) (140.3) (180.5)
Principal Payments for Finance Lease Obligations (7.7) (7.4) (6.7)
Dividends Paid on Common Stock (62.5) (200.0) (150.0)
Other Financing Activities 0.7 0.7 0.9
Net Cash Flows from Financing Activities 212.2 41.8 173.0
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash (2.6) (4.1) (3.0)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period 22.7 26.8 29.8
Cash and Cash Equivalents at Beginning of Period 5.8    
Cash, Cash Equivalents and Restricted Cash at End of Period 20.1 22.7 26.8
Cash and Cash Equivalents at End of Period 2.5 5.8  
Supplementary Information      
Cash Paid for Interest, Net of Capitalized Amounts 207.5 207.1 190.7
Net Cash Paid (Received) for Income Taxes 32.8 0.0 63.0
Noncash Acquisitions Under Finance Leases 1.7 7.2 8.8
Construction Expenditures Included in Current Liabilities as of December 31, 139.1 105.6 149.7
Indiana Michigan Power Co [Member]      
Operating Activites      
Net Income (Loss) 279.8 284.8 269.4
Adjustments to Reconcile Net Income to Net Cash Flows from (Used for) Operating Activities:      
Depreciation and Amortization 446.0 411.6 350.6
Rockport Plant, Unit 2 Operating Lease Amortization 62.4 69.2 69.2
Deferred Income Taxes (38.0) (16.2) (52.7)
Amortization (Deferral) of Incremental Nuclear Refueling Outage Expenses, Net 7.5 24.4 (26.4)
Allowance for Equity Funds Used During Construction (12.8) (11.5) (19.4)
Mark-to-Market of Risk Management Contracts 5.2 5.9 (0.6)
Amortization of Nuclear Fuel 85.3 87.5 89.1
Pension Contributions to Qualified Plan Trust 0.0 (6.4) 0.0
Deferred Fuel Over/Under-Recovery, Net (20.2) 12.4 (24.3)
Change in Other Noncurrent Assets (54.1) 6.1 8.3
Change in Other Noncurrent Liabilities 7.5 45.0 33.7
Changes in Certain Components of Working Capital:      
Accounts Receivable, Net (22.3) 14.5 35.4
Fuel, Materials and Supplies 30.1 (34.7) (22.4)
Accounts Payable 42.3 (10.8) 3.6
Accrued Taxes, Net 1.6 (20.2) 48.3
Rockport Plant, Unit 2 Operating Lease Payments (73.9) (73.9) (73.9)
Other Current Assets (15.2) 14.3 11.2
Other Current Liabilities 2.5 (25.7) (13.9)
Net Cash Flows from Operating Activities 733.7 776.3 685.2
Investing Activities      
Construction Expenditures (500.9) (544.7) (585.9)
Change in Advances to Affiliates, Net (8.2) (0.1) (0.5)
Purchases of Investment Securities (1,928.2) (1,637.2) (1,531.0)
Sales of Investment Securities 1,886.4 1,593.4 1,473.0
Acquisitions of Nuclear Fuel (104.5) (69.7) (92.3)
Other Investing Activities 22.3 9.4 16.6
Net Cash Flows Used for Investing Activities (633.1) (648.9) (720.1)
Financing Activities      
Issuance of Long-term Debt 546.7 69.5 123.3
Change in Advances from Affiliates, Net (9.7) (11.4) 113.3
Retirement of Long-term Debt (383.5) (93.2) (117.1)
Principal Payments for Finance Lease Obligations (6.8) (6.5) (5.7)
Dividends Paid on Common Stock (250.0) (85.0) (80.0)
Other Financing Activities 0.7 0.5 0.7
Net Cash Flows from Financing Activities (102.6) (126.1) 34.5
Net Increase (Decrease) in Cash and Cash Equivalents (2.0) 1.3 (0.4)
Cash and Cash Equivalents at Beginning of Period 3.3 2.0 2.4
Cash and Cash Equivalents at End of Period 1.3 3.3 2.0
Supplementary Information      
Cash Paid for Interest, Net of Capitalized Amounts 110.9 107.6 111.9
Net Cash Paid (Received) for Income Taxes 29.3 42.1 3.4
Noncash Acquisitions Under Finance Leases 132.3 3.0 11.9
Construction Expenditures Included in Current Liabilities as of December 31, 87.8 62.8 86.0
Acquisition of Nuclear Fuel Included in Current Liabilities as of December 31, 0.0 33.4 0.1
Expected Reimbursement For Spent Nuclear Fuel Dry Cask Storage 1.7 2.6 0.3
Ohio Power Co [Member]      
Operating Activites      
Net Income (Loss) 253.6 271.4 297.1
Adjustments to Reconcile Net Income to Net Cash Flows from (Used for) Operating Activities:      
Depreciation and Amortization 303.3 276.6 240.9
Amortization of Generation Deferrals 0.0 0.0 65.3
Deferred Income Taxes 30.7 77.2 43.8
Carrying Costs Income (1.2) (1.6) (1.0)
Allowance for Equity Funds Used During Construction (10.8) (12.5) (18.2)
Mark-to-Market of Risk Management Contracts (17.8) 6.7 4.0
Property Taxes (35.3) (16.6) (33.7)
Refund of Global Settlement 0.0 0.0 (16.5)
Reversal of a Regulatory Provision 0.0 0.0 (56.2)
Change in Regulatory Assets 38.3 (69.4) (20.1)
Change in Other Noncurrent Assets (40.7) (49.4) (35.3)
Change in Other Noncurrent Liabilities 6.9 (66.4) (93.2)
Changes in Certain Components of Working Capital:      
Accounts Receivable, Net (11.8) 4.2 75.0
Fuel, Materials and Supplies (2.5) (23.9) (16.4)
Accounts Payable 19.1 10.3 0.4
Accrued Taxes, Net 78.2 43.3 38.7
Other Current Assets (15.7) 1.9 0.8
Other Current Liabilities (19.9) (42.5) (55.2)
Net Cash Flows from Operating Activities 575.6 410.9 421.2
Investing Activities      
Construction Expenditures (732.8) (813.2) (799.2)
Change in Advances to Affiliates, Net (42.0) 0.0 0.0
Other Investing Activities 21.5 22.2 55.1
Net Cash Flows Used for Investing Activities (753.3) (791.0) (744.1)
Financing Activities      
Issuance of Long-term Debt 1,037.1 347.0 444.3
Change in Advances from Affiliates, Net (259.2) 128.2 16.9
Retirement of Long-term Debt (500.1) (0.1) (80.3)
Principal Payments for Finance Lease Obligations (4.9) (4.7) (3.5)
Dividends Paid on Common Stock (100.0) (87.5) (85.0)
Other Financing Activities 0.4 0.9 1.7
Net Cash Flows from Financing Activities 173.3 383.8 294.1
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash (4.4) 3.7 (28.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period 7.4 3.7 32.5
Cash and Cash Equivalents at Beginning of Period 7.4    
Cash, Cash Equivalents and Restricted Cash at End of Period 3.0 7.4 3.7
Cash and Cash Equivalents at End of Period 3.0 7.4  
Supplementary Information      
Cash Paid for Interest, Net of Capitalized Amounts 119.5 111.2 100.6
Net Cash Paid (Received) for Income Taxes (7.9) (26.9) 7.3
Noncash Acquisitions Under Finance Leases 2.5 6.1 11.3
Construction Expenditures Included in Current Liabilities as of December 31, 97.1 76.7 125.9
Public Service Co Of Oklahoma [Member]      
Operating Activites      
Net Income (Loss) 141.1 123.0 137.6
Adjustments to Reconcile Net Income to Net Cash Flows from (Used for) Operating Activities:      
Depreciation and Amortization 196.6 173.5 169.5
Deferred Income Taxes 113.9 17.0 (18.2)
Allowance for Equity Funds Used During Construction (2.4) (4.0) (2.7)
Mark-to-Market of Risk Management Contracts 1.9 5.5 (6.4)
Deferred Fuel Over/Under-Recovery, Net (843.8) (94.0) 43.8
Change in Other Noncurrent Assets (18.3) (17.9) 5.7
Change in Other Noncurrent Liabilities 4.4 1.6 (7.3)
Changes in Certain Components of Working Capital:      
Accounts Receivable, Net (28.7) 1.4 15.4
Fuel, Materials and Supplies 1.4 (14.1) (1.9)
Accounts Payable 34.2 (29.5) 7.0
Accrued Taxes, Net (6.5) 3.6 3.9
Other Current Assets (6.3) 4.6 (0.7)
Other Current Liabilities (20.8) (13.7) 4.6
Net Cash Flows from Operating Activities (433.3) 157.0 350.3
Investing Activities      
Construction Expenditures (332.1) (337.9) (291.9)
Change in Advances to Affiliates, Net 0.0 38.8 (38.8)
Acquisition of Assets 297.0 0.0 0.0
Other Investing Activities 2.4 4.0 2.6
Net Cash Flows Used for Investing Activities (626.7) (295.1) (328.1)
Financing Activities      
Capital Contributions from Member 625.0 0.0 0.0
Issuance of Long-term Debt 1,290.0 0.0 349.5
Change in Advances from Affiliates, Net (83.1) 155.4 (105.5)
Retirement of Long-term Debt (750.5) (13.2) (250.5)
Principal Payments for Finance Lease Obligations (3.2) (3.5) (3.1)
Dividends Paid on Common Stock (20.0) 0.0 (11.3)
Other Financing Activities 0.5 0.5 (1.8)
Net Cash Flows from Financing Activities 1,058.7 139.2 (22.7)
Net Increase (Decrease) in Cash and Cash Equivalents (1.3) 1.1 (0.5)
Cash and Cash Equivalents at Beginning of Period 2.6 1.5 2.0
Cash and Cash Equivalents at End of Period 1.3 2.6 1.5
Supplementary Information      
Cash Paid for Interest, Net of Capitalized Amounts 57.0 59.1 61.1
Net Cash Paid (Received) for Income Taxes (102.9) (11.8) 22.4
Noncash Acquisitions Under Finance Leases 3.6 3.2 5.3
Construction Expenditures Included in Current Liabilities as of December 31, 56.8 35.5 46.0
Noncash Contribution of Radial Assets from Parent 0.0 50.0 0.0
Southwestern Electric Power Co [Member]      
Operating Activites      
Net Income (Loss) 242.1 183.7 162.2
Adjustments to Reconcile Net Income to Net Cash Flows from (Used for) Operating Activities:      
Depreciation and Amortization 295.0 272.7 249.1
Deferred Income Taxes 16.6 32.4 (11.0)
Asset Impairments and Other Related Charges 11.6 0.0 0.0
Allowance for Equity Funds Used During Construction (7.0) (7.7) (6.8)
Mark-to-Market of Risk Management Contracts (7.3) (0.1) 0.8
Pension Contributions to Qualified Plan Trust 0.0 (8.9) 0.0
Deferred Fuel Over/Under-Recovery, Net (546.4) 26.3 16.5
Change in Regulatory Assets (95.6) (108.4) 3.5
Change in Other Noncurrent Assets 41.9 16.1 2.7
Change in Other Noncurrent Liabilities (1.1) 25.2 2.7
Changes in Certain Components of Working Capital:      
Accounts Receivable, Net (21.5) 7.3 0.0
Fuel, Materials and Supplies 126.5 (46.4) (46.1)
Accounts Payable 22.0 11.1 (28.4)
Accrued Taxes, Net 15.4 (23.1) (3.2)
Other Current Assets (3.6) (2.8) (8.9)
Other Current Liabilities 8.2 (21.1) 6.7
Net Cash Flows from Operating Activities 96.8 356.3 339.8
Investing Activities      
Construction Expenditures (414.6) (402.7) (412.7)
Change in Advances to Affiliates, Net (153.8) 0.0 81.3
Acquisition of Assets 355.8 0.0 0.0
Other Investing Activities 3.5 10.1 1.2
Net Cash Flows Used for Investing Activities (920.7) (392.6) (330.2)
Financing Activities      
Capital Contributions from Member 280.0 0.0 0.0
Issuance of Long-term Debt 1,137.6 0.0 0.0
Change in Short-term Debt with Original Maturities Less Than 90 Days, Net (35.0) 16.7 18.3
Change in Advances from Affiliates, Net (124.6) 64.7 59.9
Retirement of Long-term Debt (381.2) (21.2) (59.7)
Principal Payments for Finance Lease Obligations (10.9) (10.9) (11.0)
Dividends Paid on Common Stock 0.0 0.0 (37.5)
Dividends Paid on Common Stock (4.8) (1.9) (3.3)
Other Financing Activities 0.8 0.5 0.8
Net Cash Flows from Financing Activities 861.9 47.9 (32.5)
Net Increase (Decrease) in Cash and Cash Equivalents 38.0 11.6 (22.9)
Cash and Cash Equivalents at Beginning of Period 13.2 1.6 24.5
Cash and Cash Equivalents at End of Period 51.2 13.2 1.6
Supplementary Information      
Cash Paid for Interest, Net of Capitalized Amounts 116.5 110.7 111.1
Net Cash Paid (Received) for Income Taxes (28.8) 4.3 8.6
Noncash Acquisitions Under Finance Leases 4.8 8.9 7.4
Construction Expenditures Included in Current Liabilities as of December 31, $ 69.0 $ 46.0 $ 69.1