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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Cash provided by operating activities:      
Net loss $ (64.6) $ (182.2) $ (23.8)
Adjustments to reconcile net loss to net cash provided by operating activities:      
Depreciation and amortization 120.3 162.6 176.4
Loss of discontinued operations     32.8
Gain on sale of assets (48.7) (2.9) (5.1)
Gain on sale of equity investments   (8.6) (30.4)
Gain on purchase and cancellation of convertible debentures (3.1)    
Stock-based compensation expense 2.3 3.5 2.2
Long-lived asset and goodwill impairment charges 127.8 106.6 39.7
Equity in earnings from unconsolidated affiliates (36.2) (25.8) (26.9)
Distributions from unconsolidated affiliates 58.5 76.2 40.9
Unrealized foreign exchange gain (60.5) (38.8) (13.0)
Change in fair value of derivative instruments (14.7) 8.7 (60.2)
Change in deferred income taxes (3.5) (15.7) (27.3)
Change in other operating balances      
Accounts receivable 5.7 6.9 3.4
Inventory 2.4 (3.3) 0.8
Prepayments, refundable income taxes and other assets 20.9 21.1 51.5
Accounts payable (8.9) (4.1) (8.4)
Accruals and other liabilities (10.3) (39.2) (0.2)
Cash provided by operating activities 87.4 65.0 152.4
Cash provided by investing activities:      
Change in restricted cash 7.3 72.6 (93.7)
Proceeds from sale of assets and equity investments, net 326.3 9.5 182.6
Contribution to unconsolidated affiliate (0.6)    
Proceeds from treasury grants     103.2
Development costs (0.8)   (0.2)
Construction in progress     (39.3)
Purchase of property, plant and equipment (11.3) (13.4) (5.5)
Cash provided by investing activities 320.9 68.7 147.1
Cash used in financing activities:      
Proceeds from senior secured term loan facility   600.0  
Proceeds from issuance of equity, net of offering costs     (1.0)
Proceeds from project-level debt     20.8
Repayment of corporate and project-level debt (403.3) (639.8) (118.8)
Repayment of convertible debentures (18.9) (43.0)  
Payments for revolving credit facility borrowings     (67.0)
Deferred financing costs   (39.0) (2.8)
Equity contribution from noncontrolling interest     44.6
Dividends paid to common shareholders (11.1) (34.9) (65.1)
Dividends paid to noncontrolling interests (3.7) (11.1) (8.9)
Dividends paid to preferred shareholders (8.8) (14.6) (9.4)
Cash used in financing activities (445.8) (182.4) (207.6)
Net (decrease) increase in cash and cash equivalents (37.5) (48.7) 91.9
Cash overdraft at beginning of period at discontinued operatiions     (3.9)
Cash and cash equivalents at beginning of period at discontinued operations 3.9   6.5
Cash and cash equivalents at beginning of period 106.0 158.6 60.2
Cash and cash equivalents at end of period 72.4 106.0 158.6
Supplemental cash flow information      
Interest paid 100.0 168.8 130.4
Income taxes paid, net 10.2 $ 3.8 5.9
Accruals for construction in progress $ 0.6   $ 8.9