Quarterly report pursuant to Section 13 or 15(d)

FINANCIAL STATEMENT COMPONENTS - Accumulated Other Comprehensive Income (Loss) (Details)

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FINANCIAL STATEMENT COMPONENTS - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Sep. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance   $ 3,368,328
Ending balance $ 3,584,549  
Accumulated Other Comprehensive Income (Loss)    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance   (49,075)
Ending balance (46,386)  
Currency Translation Adjustments    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance   (75,846)
Ending balance (80,016)  
Unrealized Gains (Losses) on Available-for-Sale Securities    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance   (3,654)
Ending balance 2,316  
Unrealized Gains (Losses) on Derivatives    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance   46,243
Ending balance 46,557  
Unrealized Gains (Losses) on Defined Benefit Plans    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance   $ (15,818)
Ending balance $ (15,243)