Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Non-cash accelerated intangible asset amortization	[1]	$ 44,825	$ 51,724	$ 276,959	$ 155,508
Litigation settlement, amount received				5,600
Business combination purchase price tax adjustment received	[2]			(5,282)	0
Income tax provision (benefit)		32,800		(500)
Income tax benefit for decrease in deferred tax liabilities due to impact of rebranding				(36,500)
Cumulative preferred stock dividends undeclared		5,000	5,000	5,000	5,000
Preferred stock dividends declared and paid		$ 1,000	$ 1,000	13,000	$ 13,000
Shares issued upon conversion of preferred stock		9,694,619	9,694,619
Allied Acquisition [Member]
Business combination purchase price tax adjustment received				5,300
Business acquisition purchase price and tax position		$ 164,000		164,000
Allied Acquisition [Member] | Tradenames [Member]
Non-cash accelerated intangible asset amortization				$ 142,600

[1] Nine months ended June 30, 2020 amount includes non-cash accelerated intangible asset amortization of $142.6 million in connection with the Rebranding (see Notes 1 and 6 for further discussion.

[2] Related to a gain recognized for a partial refund of the $164.0 million payment resulting from the 338(h)(10) election made in connection with the Allied Acquisition.