Supplemental Cash Flow Information (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023
Supplemental Cash Flow Elements [Abstract]
Payments of interest and commitment fees	$ 126.0	$ 117.5
Interest paid, capitalized	23.3	18.3
Incurred liabilities for fixed and intangible asset additions	$ 43.2	$ 64.0

Future cash outflow to pay for purchases of fixed assets that have occurred.

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-Name Accounting Standards Codification
-Topic 230
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-Section 50
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Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to 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; classified as operating and investing activities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Amount of cash paid for interest capitalized, classified as investing activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 230
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-Name Accounting Standards Codification
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