XML 90 R79.htm IDEA: XBRL DOCUMENT v3.20.2
Accumulated Other Comprehensive Loss - Additional Information (Detail) - USD ($)
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]    
Expense related to pension liability reclassified from accumulated other comprehensive earnings $ 3,100,000 $ 3,600,000
Income related to fair value of derivative investments reclassified from accumulated other comprehensive earnings 2,500,000 1,900,000
Foreign currency translation reclassified from accumulated other comprehensive earnings $ 0 $ 0