DEBT AND CREDIT FACILITIES - Summary of Debt Carrying Amount (Details) - USD ($) $ in Millions	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total debt, net	$ 24,987		$ 25,229
Less: Current portion of long-term debt and other obligations, net	1,798		2,273
Total Long-term debt, net	23,189		22,957
Senior notes
Debt Instrument [Line Items]
Total debt, net	$ 24,000
Senior notes | 2.50% Senior Unsecured Notes Due in September 2023
Debt Instrument [Line Items]
Interest Rate	2.50%
Total debt, net	$ 0		749
Senior notes | 0.75% Senior Unsecured Notes Due in September 2023
Debt Instrument [Line Items]
Interest Rate	0.75%
Total debt, net	$ 0		1,498
Senior notes | 3.70% Senior Unsecured Notes Due in April 2024
Debt Instrument [Line Items]
Interest Rate	3.70%
Total debt, net	$ 1,750		1,748
Senior notes | 3.50% Senior Unsecured Notes Due in February 2025
Debt Instrument [Line Items]
Interest Rate	3.50%
Total debt, net	$ 1,749		1,748
Senior notes | 3.65% Senior Unsecured Notes Due in March 2026
Debt Instrument [Line Items]
Interest Rate	3.65%
Total debt, net	$ 2,744		2,742
Senior notes | 2.95% Senior Unsecured Notes Due in March 2027
Debt Instrument [Line Items]
Interest Rate	2.95%
Total debt, net	$ 1,248		1,247
Senior notes | 1.20% Senior Unsecured Notes Due October 2027
Debt Instrument [Line Items]
Interest Rate	1.20%
Total debt, net	$ 747		747
Senior notes | 1.65% Senior Unsecured Notes Due October 2030
Debt Instrument [Line Items]
Interest Rate	1.65%
Total debt, net	$ 994		993
Senior notes | 5.25% Senior Unsecured Notes Due October 2033
Debt Instrument [Line Items]
Interest Rate	5.25%	5.25%
Total debt, net	$ 992		0
Senior notes | 4.60% Senior Unsecured Notes Due in September 2035
Debt Instrument [Line Items]
Interest Rate	4.60%
Total debt, net	$ 993		993
Senior notes | 4.00% Senior Unsecured Notes Due in September 2036
Debt Instrument [Line Items]
Interest Rate	4.00%
Total debt, net	$ 743		742
Senior notes | 2.60% Senior Unsecured Notes Due October 2040
Debt Instrument [Line Items]
Interest Rate	2.60%
Total debt, net	$ 988		988
Senior notes | 5.65% Senior Unsecured Notes Due in December 2041
Debt Instrument [Line Items]
Interest Rate	5.65%
Total debt, net	$ 996		996
Senior notes | 4.80% Senior Unsecured Notes Due in April 2044
Debt Instrument [Line Items]
Interest Rate	4.80%
Total debt, net	$ 1,737		1,736
Senior notes | 4.50% Senior Unsecured Notes Due in February 2045
Debt Instrument [Line Items]
Interest Rate	4.50%
Total debt, net	$ 1,734		1,733
Senior notes | 4.75% Senior Unsecured Notes Due in March 2046
Debt Instrument [Line Items]
Interest Rate	4.75%
Total debt, net	$ 2,222		2,221
Senior notes | 4.15% Senior Unsecured Notes Due in March 2047
Debt Instrument [Line Items]
Interest Rate	4.15%
Total debt, net	$ 1,729		1,728
Senior notes | 2.80% Senior Unsecured Notes Due October 2050
Debt Instrument [Line Items]
Interest Rate	2.80%
Total debt, net	$ 1,478		1,477
Senior notes | 5.55% Senior Unsecured Notes Due October 2053
Debt Instrument [Line Items]
Interest Rate	5.55%	5.55%
Total debt, net	$ 988		0
Senior Notes and Medium-Term Notes
Debt Instrument [Line Items]
Total senior unsecured notes	23,834		24,088
Liability related to future royalties
Debt Instrument [Line Items]
Total debt, net	$ 1,153		$ 1,141