Goodwill (Narrative) (Details) - USD ($) $ in Thousands	Jul. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Aug. 31, 2022	Sep. 30, 2021
Goodwill [Line Items]
Goodwill		$ 791,468		$ 772,559		$ 805,333
Assumed annual compound growth rate after five years	4.59%
Minimum [Member]
Goodwill [Line Items]
Weighted average cost of capital assumption	9.66%
Maximum [Member]
Goodwill [Line Items]
Weighted average cost of capital assumption	17.99%
Industrial [Member]
Goodwill [Line Items]
Goodwill		$ 336,045		$ 317,136		$ 349,910
P M Controls [Member]
Goodwill [Line Items]
Goodwill			$ 8,705		$ 8,705
P M Controls [Member] | Industrial [Member]
Goodwill [Line Items]
Goodwill					$ 8,526