Quarterly report pursuant to Section 13 or 15(d)

Debt, Net (Narrative) (Details)

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Debt, Net (Narrative) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Debt Disclosure [Abstract]        
Interest costs capitalized $ 3.2 $ 2.4 $ 6.5 $ 4.4