DEBT AND INTEREST - Other Debt Information (Details) € in Millions, $ in Millions	1 Months Ended			3 Months Ended								12 Months Ended
	Jan. 31, 2024 USD ($)	Jan. 31, 2024 EUR (€)	Nov. 30, 2022 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 EUR (€)
Debt instrument
Carrying value				$ 8,180.0				$ 8,576.7				$ 8,180.0	$ 8,576.7
Long-term debt, current maturities				(628.6)				(501.4)				(628.6)	(501.4)
Long-term debt				7,551.4				8,075.3				7,551.4	8,075.3
Repayments of long-term debt												500.0		$ 1,017.9
Aggregate annual maturities of long-term debt
2024				629.0								629.0
2025				634.0								634.0
2026				729.0								729.0
2027				946.0								946.0
2028				495.0								495.0
Interest
Interest expense												348.9	252.1	230.6
Interest income												(52.2)	(8.5)	(12.3)
Interest expense, net				70.4	$ 74.3	$ 77.8	$ 74.2	69.5	$ 65.1	$ 56.0	$ 53.0	$ 296.7	243.6	218.3
Subsequent event
Debt instrument
Repayments of long-term debt	$ 630.0	€ 575
Interest expense
Debt instrument
Debt refinancing charges, pre-tax														32.3
Debt refinancing charges, net of tax														$ 28.4
Public Notes
Debt instrument
Principal outstanding payable at time of prepayment of notes (as a percent)												101.00%
Two Year 2021 Senior Notes
Debt instrument
Carrying value								$ 498.7					$ 498.7
AVERAGE INTEREST RATE (as a percent)								0.90%					0.90%
Effective interest rate (as a percent)								1.19%					1.19%
Aggregate principal amount				500.0								$ 500.0
Debt instrument, term												2 years
Five Year 2022 senior notes
Debt instrument
Carrying value				$ 494.2				$ 492.7				$ 494.2	$ 492.7
AVERAGE INTEREST RATE (as a percent)				5.25%				5.25%				5.25%	5.25%		5.25%
Effective interest rate (as a percent)				5.60%				5.36%				5.60%	5.36%		5.60%
Aggregate principal amount				$ 500.0								$ 500.0
Debt instrument, term												5 years
Six Year 2021 Senior Notes
Debt instrument
Carrying value				$ 497.4				$ 496.5				$ 497.4	$ 496.5
AVERAGE INTEREST RATE (as a percent)				1.65%				1.65%				1.65%	1.65%		1.65%
Effective interest rate (as a percent)				1.83%				1.83%				1.83%	1.83%		1.83%
Aggregate principal amount				$ 500.0								$ 500.0
Debt instrument, term												6 years
Ten year 2017 senior notes
Debt instrument
Carrying value				$ 448.3				$ 433.9				$ 448.3	$ 433.9
AVERAGE INTEREST RATE (as a percent)				3.25%				3.25%				3.25%	3.25%		3.25%
Effective interest rate (as a percent)				8.43%				4.77%				8.43%	4.77%		8.43%
Aggregate principal amount				$ 500.0								$ 500.0
Debt instrument, term												10 years
Ten year 2020 senior notes
Debt instrument
Carrying value				$ 662.7				$ 653.5				$ 662.7	$ 653.5
AVERAGE INTEREST RATE (as a percent)				4.80%				4.80%				4.80%	4.80%		4.80%
Effective interest rate (as a percent)				6.19%				3.72%				6.19%	3.72%		6.19%
Aggregate principal amount				$ 698.0								$ 698.0
Debt instrument, term												10 years
Ten year 2020 senior notes, maturing in 2031
Debt instrument
Carrying value				$ 561.0				$ 555.2				$ 561.0	$ 555.2
AVERAGE INTEREST RATE (as a percent)				1.30%				1.30%				1.30%	1.30%		1.30%
Effective interest rate (as a percent)				3.21%				1.70%				3.21%	1.70%		3.21%
Aggregate principal amount				$ 600.0								$ 600.0
Debt instrument, term												10 years
Eleven Year 2021 Senior Notes
Debt instrument
Carrying value				$ 645.2				$ 644.6				$ 645.2	$ 644.6
AVERAGE INTEREST RATE (as a percent)				2.13%				2.13%				2.13%	2.13%		2.13%
Effective interest rate (as a percent)				2.06%				2.24%				2.06%	2.24%		2.06%
Aggregate principal amount				$ 650.0								$ 650.0
Debt instrument, term												11 years
Thirty year 2011 senior notes
Debt instrument
Carrying value				$ 384.7				$ 384.5				$ 384.7	$ 384.5
AVERAGE INTEREST RATE (as a percent)				5.50%				5.50%				5.50%	5.50%		5.50%
Effective interest rate (as a percent)				5.62%				5.62%				5.62%	5.62%		5.62%
Aggregate principal amount				$ 389.0								$ 389.0
Debt instrument, term												30 years
Thirty year 2017 senior notes
Debt instrument
Carrying value				$ 426.8				$ 425.5				$ 426.8	$ 425.5
AVERAGE INTEREST RATE (as a percent)				3.95%				3.95%				3.95%	3.95%		3.95%
Effective interest rate (as a percent)				4.79%				4.79%				4.79%	4.79%		4.79%
Aggregate principal amount				$ 484.0								$ 484.0
Debt instrument, term												30 years
Thirty year 2020 senior notes
Debt instrument
Carrying value				$ 491.1				$ 490.7				$ 491.1	$ 490.7
AVERAGE INTEREST RATE (as a percent)				2.13%				2.13%				2.13%	2.13%		2.13%
Effective interest rate (as a percent)				2.23%				2.23%				2.23%	2.23%		2.23%
Aggregate principal amount				$ 500.0								$ 500.0
Debt instrument, term												30 years
Thirty Year 2021 Senior Notes
Debt instrument
Carrying value				$ 839.3				$ 838.9				$ 839.3	$ 838.9
AVERAGE INTEREST RATE (as a percent)				2.70%				2.70%				2.70%	2.70%		2.70%
Effective interest rate (as a percent)				2.78%				2.78%				2.78%	2.78%		2.78%
Aggregate principal amount				$ 850.0								$ 850.0
Debt instrument, term												30 years
Thirty-four year 2021 senior notes
Debt instrument
Carrying value				$ 539.2				$ 537.2				$ 539.2	$ 537.2
AVERAGE INTEREST RATE (as a percent)				2.75%				2.75%				2.75%	2.75%		2.75%
Effective interest rate (as a percent)				3.86%				3.86%				3.86%	3.86%		3.86%
Aggregate principal amount				$ 685.0								$ 685.0
Debt instrument, term												34 years
Seven year 2016 senior euro notes
Debt instrument
Carrying value				$ 625.9				$ 596.9				$ 625.9	$ 596.9
AVERAGE INTEREST RATE (as a percent)				1.00%				1.00%				1.00%	1.00%		1.00%
Effective interest rate (as a percent)				1.19%				1.03%				1.19%	1.03%		1.19%
Aggregate principal amount | €															€ 575
Debt instrument, term												7 years
Ten year 2016 senior notes
Debt instrument
Carrying value				$ 728.2				$ 721.1				$ 728.2	$ 721.1
AVERAGE INTEREST RATE (as a percent)				2.70%				2.70%				2.70%	2.70%		2.70%
Effective interest rate (as a percent)				4.07%				3.21%				4.07%	3.21%		4.07%
Aggregate principal amount				$ 750.0								$ 750.0
Debt instrument, term												10 years
Thirty year 2016 senior notes
Debt instrument
Carrying value				$ 197.4				$ 197.3				$ 197.4	$ 197.3
AVERAGE INTEREST RATE (as a percent)				3.70%				3.70%				3.70%	3.70%		3.70%
Effective interest rate (as a percent)				3.80%				3.81%				3.80%	3.81%		3.80%
Aggregate principal amount				$ 200.0								$ 200.0
Debt instrument, term												30 years
Ten Year 2015 senior euro notes
Debt instrument
Carrying value				$ 625.1				$ 596.7				$ 625.1	$ 596.7
AVERAGE INTEREST RATE (as a percent)				2.63%				2.63%				2.63%	2.63%		2.63%
Effective interest rate (as a percent)				2.88%				2.81%				2.88%	2.81%		2.88%
Aggregate principal amount | €															€ 575
Debt instrument, term												10 years
New 5-Year Note
Debt instrument
Aggregate principal amount			$ 500.0
Debt instrument, term			5 years
Interest rate (as a percent)			5.25%
Other debt.
Debt instrument
Carrying value				$ 13.5				$ 12.8				$ 13.5	$ 12.8