Annual report pursuant to Section 13 and 15(d)

ACCOUNTING PRONOUNCEMENTS - Narrative (Details)

v3.20.2
ACCOUNTING PRONOUNCEMENTS - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Jun. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2020
Oct. 01, 2019
Sep. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Cumulative tax adjustment for intra-entity transfers     $ 719,236 $ 868,714 $ 611,433   $ 790,259
Operating lease, right-of-use asset         72,011    
Operating lease liabilities         73,239    
Reclassification of accumulated other comprehensive (loss) income ("AOCI") tax effects       (8,814)      
Accounting Standards Update [Extensible List] us-gaap:AccountingStandardsUpdate201602Member us-gaap:AccountingStandardsUpdate201802Member          
Cumulative Effect, Period of Adoption, Adjustment              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Cumulative tax adjustment for intra-entity transfers       (4,176)      
Accounting Standards Update 2016-02              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Operating lease, right-of-use asset           $ 80,000  
Operating lease liabilities           $ 80,000  
Retained Earnings              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Cumulative tax adjustment for intra-entity transfers     972,594 1,040,378 859,002   948,830
Reclassification of accumulated other comprehensive (loss) income ("AOCI") tax effects       8,814      
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Cumulative tax adjustment for intra-entity transfers     4,176 (4,176)      
Accumulated Other Comprehensive (Loss) Income (net of tax)              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Cumulative tax adjustment for intra-entity transfers     (228,361) (164,298) $ (240,719)   $ (154,115)
Reclassification of accumulated other comprehensive (loss) income ("AOCI") tax effects       $ (8,814)      
Accumulated Other Comprehensive (Loss) Income (net of tax) | Accounting Standards Update 2018-02              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Reclassification of accumulated other comprehensive (loss) income ("AOCI") tax effects     $ 8,814