Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments And Risk Management (Narrative) (Details)

v3.20.2
Financial Instruments And Risk Management (Narrative) (Details)
Sep. 30, 2020
USD ($)
Derivative [Line Items]  
Deferred net gains on derivatives accumulated in other comprehensive income expected reclassification to net income in next twelve months $ 5,100,000
Maximum  
Derivative [Line Items]  
Aggregate unrealized gain of derivative contracts with single counterparty $ 2,900,000