| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Cash flows from operating activities | | | | | | | | |
| Net income | 393.7 | 95.2 | 184.8 | 270.7 | 196.7 | 373.4 | 92.7 | -59.5 |
| |
| Adjustments for: | | | | | | | | |
| Depreciation and amortization | 149.4 | 143.3 | 143.6 | 137.8 | 133.3 | 124.2 | 99.5 | 79.2 |
| (Earnings) losses of equity method investees | 137.3 | 512.5 | 472.2 | 362.9 | 347.2 | -64.7 | -14.4 | -23.0 |
| Dividends received from equity method investees | | | | | | | | |
| Change in market value of derivatives | -126.4 | -108.6 | -136.8 | -10.4 | -11.4 | -33.5 | -8.7 | -5.0 |
| Deferred taxes | | | -279.5 | -207.6 | -189.4 | -66.2 | -8.8 | -1.9 |
| Asset impairment expense | | | 50.7 | | 48.1 | | | |
| Sale of equity method investments | | 37.4 | | | | | | |
| Other | -2.4 | -13.0 | -8.0 | 13.3 | -4.6 | -8.7 | -11.2 | -3.3 |
| Changes in operating assets and liabilities: | | | | | | | | |
| (Increase) in receivables | -30.6 | -53.3 | -139.9 | -335.7 | -209.4 | -162.8 | -123.6 | -59.1 |
| (Increase) in inventories | -33.5 | 8.4 | -7.9 | 16.9 | -10.9 | -24.6 | -11.2 | -59.6 |
| Decrease (increase) in other assets | 92.4 | -42.6 | -30.1 | -120.7 | -64.5 | 19.7 | -1.8 | 6.1 |
| Decrease in right-of-use assets | 69.0 | 59.9 | 63.6 | 76.7 | 61.8 | 35.8 | 28.6 | 12.7 |
| Increase in accounts payable/accrued liabilities | 71.9 | -44.2 | 67.7 | 9.6 | 64.4 | 108.4 | 17.5 | 29.0 |
| (Decrease) in lease liabilities | -102.4 | -92.8 | -94.8 | -112.2 | -67.5 | -47.9 | | |
| Increase (decrease) in other liabilities | 136.2 | 83.9 | 6.6 | 50.2 | -8.6 | -41.7 | -21.3 | -27.3 |
| Net cash provided by operating activities | 688.1 | 440.9 | 355.1 | 315.6 | 367.1 | 311.1 | 84.8 | -149.5 |
| |
| Cash flows from investing activities | | | | | | | | |
| Capital expenditures | -2,197.9 | -1,548.1 | -1,174.0 | -1,026.0 | -875.7 | -777.8 | -669.3 | -471.7 |
| Sale of equity method investment | | 100.0 | | | | | | |
| Other non-cash items | -3.2 | | | -5.4 | | | -9.4 | -6.5 |
| Net cash used in investing activities | -1,008.1 | -356.8 | -82.7 | -438.4 | -884.3 | -2,372.5 | -2,273.6 | -2,073.1 |
| |
| Cash flows from financing activities | | | | | | | | |
| Payment of deferred financing costs | -19.5 | -20.0 | -17.6 | -18.1 | -21.6 | -40.6 | -37.8 | -45.2 |
| Repayment of debt | -1,374.8 | -1,398.2 | -1,520.8 | -1,749.6 | -591.2 | -584.7 | -461.0 | -229.9 |
| Payments related to tax withholdings for share-based compensation | -69.1 | | -72.6 | -73.0 | | -13.6 | -30.1 | |
| Payment of dividends | -728.6 | -725.1 | -99.1 | -98.9 | -94.8 | -94.9 | -88.8 | -81.9 |
| Other financing activities | -3.9 | | | | | | | |
| Net cash provided by financing activities | 317.9 | 328.3 | 322.0 | 192.5 | 499.0 | 1,901.7 | 1,816.9 | 2,401.8 |
| Impact of changes in foreign exchange rates on cash and cash equivalents | -1.7 | -17.3 | -5.3 | | -2.0 | 13.0 | | |
| |
| Supplemental disclosure of non-cash investing and financing activities: | | | | | | | | |
| Changes in accounts payable and accrued liabilities associated with construction in progress and property, plant and equipment additions | 1,011.9 | 613.3 | 284.4 | 34.4 | 28.6 | 102.3 | 108.8 | 179.2 |
| Cash and cash equivalents | | | | | | | | |
| Current restricted cash | | | | | | | | |