Restructuring Charges (Narrative) (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended		18 Months Ended
	Oct. 31, 2025 USD ($) position	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) position
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 1,836	$ 30,694	$ 17,042	$ 64,859
2025 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1,836		1,836
2025 Plan | Minimum | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected number of positions eliminated during period | position	300
Restructuring and related cost, expected cost	$ 30,000
Effect on future earnings, offset amount	$ 35,000
2025 Plan | Maximum | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected number of positions eliminated during period | position	400
Restructuring and related cost, expected cost	$ 45,000
Effect on future earnings, offset amount	$ 50,000
2024 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 0		$ 15,206		$ 89,000
Restructuring and related cost, number of positions eliminated during period | position						3,200