SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Cash Flow Information (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|||
| Supplemental Cash Flow Information [Abstract] | Ìý | Ìý | Ìý | Ìý | ||
| Capital additions | Ìý | Ìý | $ 230.7 | $ 320.9 | ||
| Non-cash accruals | Ìý | Ìý | (91.6) | 3.6 | ||
| Right-of-use assets obtained in exchange for new finance lease liabilities1 | Ìý | Ìý | 39.4 | 24.8 | ||
| Grants | Ìý | Ìý | 0.0 | (8.4) | ||
| Cash paid for capital expenditures including deposits | Ìý | Ìý | 282.9 | 300.9 | ||
| Taxes paid on income | Ìý | Ìý | 0.2 | 0.1 | ||
| Income tax refunds | Ìý | Ìý | (60.4) | (117.9) | ||
| Interest paid on debt obligations net of capitalized interest | [1] | Ìý | Ìý | 63.0 | 53.2 | |
| Interest Costs Capitalized | $ 13.6 | $ 5.9 | $ 23.3 | $ 9.9 | ||
| ||||||
| X | ||||||||||
- Definition Increase (decrease) in future cash outflow to pay for purchases of fixed assets that have occurred during the period. No definition available.
|
| X | ||||||||||
- Definition Government grant received on property, plant and equipment investments. No definition available.
|
| X | ||||||||||
- Definition Property, Plant and Equipment, Additions, Including Discontinued Operations No definition available.
|
| X | ||||||||||
- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of interest capitalized during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of cash received during the period as refunds for the overpayment of taxes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in right-of-use asset obtained in exchange for finance lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|