Supplemental Cash Flow Information (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Supplemental Cash Flow Elements [Abstract]
Payments of interest and commitment fees	$ 152,100,000	$ 113,500,000
Interest paid, capitalized	14,800,000	23,300,000
Incurred liabilities for fixed and intangible asset additions	$ 12,700,000	$ 38,800,000