Annual report pursuant to Section 13 and 15(d)

Business Acquisitions - Other (Details)

v3.19.3
Business Acquisitions - Other (Details) - USD ($)
12 Months Ended
Jul. 12, 2019
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2017
Acquisitions        
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 0.1612      
Business acquisition, development, and integration costs   $ 16,600,000 $ 3,500,000 $ 1,100,000
Business Combination, Consideration Transferred $ 2,000,000,000      
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned $ 11.80      
Line of Credit [Member]        
Acquisitions        
Maximum borrowing capacity available under the facility   900,000,000 $ 900,000,000.0 $ 700,000,000.0
$180 term loan        
Acquisitions        
Debt issued   $ 180,000,000.0