DEBT - Summary of Information Related to Other Senior Notes Outstanding (Details) - Senior Notes		Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Apr. 30, 2020	Aug. 31, 2017	Mar. 31, 2017	May 31, 2016	Nov. 30, 2015	Mar. 31, 2015	Sep. 30, 2014
0.8% (€1 billion) Senior Notes due March 2022
Debt Instrument
Stated interest rate				0.80%			0.80%
Effective interest rate	[1]						0.94%
2.15% (€750 million) Senior Notes due November 2022
Debt Instrument
Stated interest rate		2.15%		2.15%					2.15%
Effective interest rate	[1]								2.27%
2.75% Senior Notes due March 2023
Debt Instrument
Stated interest rate		2.75%		2.75%		2.75%
Effective interest rate	[1]					2.88%
2.375% (€1 billion) Senior Notes due September 2024
Debt Instrument
Stated interest rate		2.375%		2.375%							2.375%
Effective interest rate	[1]										2.54%
3.65% Senior Notes due March 2025
Debt Instrument
Stated interest rate		3.65%		3.65%						3.65%
Effective interest rate	[1]									3.76%
0.1% (€950 million) Senior Notes due March 2025
Debt Instrument
Stated interest rate		0.10%	0.10%
Effective interest rate	[1]		0.30%
3.6% Senior Notes due June 2026
Debt Instrument
Stated interest rate		3.60%		3.60%				3.60%
Effective interest rate	[1]							3.70%
1.8% (€1 billion) Senior Notes due March 2027
Debt Instrument
Stated interest rate		1.80%		1.80%						1.80%
Effective interest rate	[1]									1.86%
3.55% Senior Notes due March 2028
Debt Instrument
Stated interest rate		3.55%		3.55%		3.55%
Effective interest rate	[1]					3.63%
0.5% (€750 million) Senior Notes due March 2028
Debt Instrument
Stated interest rate		0.50%	0.50%
Effective interest rate	[1]		0.63%
4.625% Senior Notes due April 2030
Debt Instrument
Stated interest rate		4.625%		4.625%	4.625%
Effective interest rate	[1]				4.72%

[1] Represents the coupon interest rate adjusted for deferred debt issuance costs, premiums or discounts existing at the origination of the debt.