Derivative Instruments and Hedging Activities - Additional Information (Details) $ in Millions |
Jun. 30, 2019
USD ($)
|
---|---|
Derivative Instruments And Hedging Activities Disclosure [Abstract] | |
Estimated fair value of derivative instruments, net asset | $ 97.7 |
Amount expected to reclassify commodity hedge related deferred gains to earnings before income taxes | 108.7 |
Amount of deferred gains to be reclassified into earnings before income taxes over next twelve months | $ 81.3 |