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DEBT AND INTEREST - Other Debt Information (Details) € in Millions, $ in Millions, ¥ in Billions	1 Months Ended			3 Months Ended		9 Months Ended
	Aug. 31, 2025 USD ($)	Jul. 31, 2025 USD ($)	Jul. 31, 2025 EUR (€)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2025 CNY (¥)	Dec. 31, 2024 USD ($)
Debt instrument
Carrying value				$ 8,064.1		$ 8,064.1				$ 7,561.3
Long-term debt, current maturities				(11.4)		(11.4)				(612.1)
Long-term debt				8,052.7		8,052.7				6,949.2
Repayments of long-term debt						674.2	$ 630.4
Interest
Interest expense				74.6	$ 86.4	223.3	261.1
Interest income				(19.3)	(16.0)	(46.5)	(40.3)
Interest expense, net				55.3	$ 70.4	176.8	$ 220.8
Ten Year 2015 senior euro notes
Debt instrument
Carrying value										607.8
Aggregate principal amount				575.0		$ 575.0
Debt instrument, term						10 years
Repayments of long-term debt		$ 674.0	€ 575
Ten year 2016 senior notes
Debt instrument
Carrying value				743.8		$ 743.8				735.2
Aggregate principal amount				750.0		$ 750.0
Debt instrument, term						10 years
Thirty year 2016 senior notes
Debt instrument
Carrying value				197.6		$ 197.6				197.5
Aggregate principal amount				200.0		$ 200.0
Debt instrument, term						30 years
Ten year 2017 senior notes
Debt instrument
Carrying value				477.9		$ 477.9				456.5
Aggregate principal amount				500.0		$ 500.0
Debt instrument, term						10 years
Six Year 2021 Senior Notes
Debt instrument
Carrying value				498.9		$ 498.9				498.2
Aggregate principal amount				500.0		$ 500.0
Debt instrument, term						6 years
Five Year 2022 senior notes
Debt instrument
Carrying value				496.7		$ 496.7				495.6
Aggregate principal amount				500.0		$ 500.0
Debt instrument, term						5 years
Three year 2025 senior notes
Debt instrument
Carrying value				496.3		$ 496.3
Effective interest rate (as a percent)								4.36%	4.36%
Aggregate principal amount				500.0		$ 500.0		$ 500.0
Principal year								3 years	3 years
Debt instrument, term						3 years
Interest rate (as a percent)								4.30%	4.30%
Ten year 2020 senior notes
Debt instrument
Carrying value				670.2		$ 670.2				657.2
Aggregate principal amount				698.0		$ 698.0
Debt instrument, term						10 years
Ten year 2020 senior notes, maturing in 2031
Debt instrument
Carrying value				570.3		$ 570.3				559.3
Aggregate principal amount				600.0		$ 600.0
Debt instrument, term						10 years
Eleven Year 2021 Senior Notes
Debt instrument
Carrying value				646.2		$ 646.2				645.8
Aggregate principal amount				650.0		$ 650.0
Debt instrument, term						11 years
Ten year 2025 senior nots
Debt instrument
Carrying value				495.0		$ 495.0
Effective interest rate (as a percent)	5.05%
Aggregate principal amount	$ 500.0			500.0		$ 500.0
Debt instrument, term	10 years					10 years
Interest rate (as a percent)	5.00%
Thirty year 2011 senior notes
Debt instrument
Carrying value				385.1		$ 385.1				385.0
Aggregate principal amount				389.0		$ 389.0
Debt instrument, term						30 years
Thirty year 2017 senior notes
Debt instrument
Carrying value				429.3		$ 429.3				428.2
Aggregate principal amount				484.0		$ 484.0
Debt instrument, term						30 years
Thirty year 2020 senior notes
Debt instrument
Carrying value				491.7		$ 491.7				491.4
Aggregate principal amount				500.0		$ 500.0
Debt instrument, term						30 years
Thirty Year 2021 Senior Notes
Debt instrument
Carrying value				840.0		$ 840.0				839.7
Aggregate principal amount				850.0		$ 850.0
Debt instrument, term						30 years
Thirty-four year 2021 senior notes
Debt instrument
Carrying value				542.9		$ 542.9				541.2
Aggregate principal amount				685.0		$ 685.0
Debt instrument, term						34 years
Other debt.
Debt instrument
Carrying value				$ 82.2		$ 82.2				$ 22.7
Public Notes
Debt instrument
Principal outstanding payable at time of prepayment of notes (as a percent)						101.00%
Construction loan payable
Debt instrument
Aggregate principal amount								$ 157.0	¥ 1.1
Principal year								13 years	13 years