XML 18 R5.htm IDEA: XBRL DOCUMENT v3.20.2
Condensed Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Statement of Comprehensive Income [Abstract]        
Net income $ 136,081 $ 114,325 $ 265,410 $ 231,711
Other comprehensive income (loss), net of tax:        
Change in unrealized gain (loss) on derivatives designated as cash flow hedges 3,664 (5,014) 2,225 (19,979)
Change in postretirement plan costs 22 16 44 50
Total other comprehensive income (loss), net of tax 3,686 (4,998) 2,269 (19,929)
Comprehensive income $ 139,767 $ 109,327 $ 267,679 $ 211,782