XML 106 R87.htm IDEA: XBRL DOCUMENT v3.19.2
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