Earnings (Loss) Per Share (Schedule Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net income (loss)	$ 179,012	$ 201,751	$ 203,613	$ (78,481)	$ 179,514	$ 178,372	$ 584,376	$ 279,405
Denominator:
Basic weighted-average common shares outstanding (shares)	146,240			145,513			145,969	145,217
Effect of dilutive securities:
Stock options and restricted stock units (shares)	722			0			1,065	1,177
Diluted weighted average shares (shares)	146,962			145,513			147,034	146,394
Basic earnings (loss) per share (dollars per share)	$ 1.22			$ (0.54)			$ 4.00	$ 1.92
Diluted earnings (loss) per share (dollars per share)	$ 1.22			$ (0.54)			$ 3.97	$ 1.91