INVESTMENTS AND FAIR VALUE MEASUREMENT - Schedule of Financial Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Details) $ in Millions	Sep. 30, 2023 USD ($)
Assets
Held-to-maturity investments	$ 488
Corporate debt securities
Assets
Held-to-maturity investments	223
U.S. Treasury securities
Assets
Held-to-maturity investments	149
U.S. government agency securities
Assets
Held-to-maturity investments	49
Certificates of deposit
Assets
Held-to-maturity investments	48
Commercial paper
Assets
Held-to-maturity investments	19
Estimate of Fair Value Measurement
Assets
Held-to-maturity investments	488
Estimate of Fair Value Measurement | Corporate debt securities
Assets
Held-to-maturity investments	223
Estimate of Fair Value Measurement | U.S. Treasury securities
Assets
Held-to-maturity investments	149
Estimate of Fair Value Measurement | U.S. government agency securities
Assets
Held-to-maturity investments	49
Estimate of Fair Value Measurement | Certificates of deposit
Assets
Held-to-maturity investments	48
Estimate of Fair Value Measurement | Commercial paper
Assets
Held-to-maturity investments	19
Estimate of Fair Value Measurement | Level 1
Assets
Held-to-maturity investments	149
Estimate of Fair Value Measurement | Level 1 | Corporate debt securities
Assets
Held-to-maturity investments	0
Estimate of Fair Value Measurement | Level 1 | U.S. Treasury securities
Assets
Held-to-maturity investments	149
Estimate of Fair Value Measurement | Level 1 | U.S. government agency securities
Assets
Held-to-maturity investments	0
Estimate of Fair Value Measurement | Level 1 | Certificates of deposit
Assets
Held-to-maturity investments	0
Estimate of Fair Value Measurement | Level 1 | Commercial paper
Assets
Held-to-maturity investments	0
Estimate of Fair Value Measurement | Level 2
Assets
Held-to-maturity investments	339
Estimate of Fair Value Measurement | Level 2 | Corporate debt securities
Assets
Held-to-maturity investments	223
Estimate of Fair Value Measurement | Level 2 | U.S. Treasury securities
Assets
Held-to-maturity investments	0
Estimate of Fair Value Measurement | Level 2 | U.S. government agency securities
Assets
Held-to-maturity investments	49
Estimate of Fair Value Measurement | Level 2 | Certificates of deposit
Assets
Held-to-maturity investments	48
Estimate of Fair Value Measurement | Level 2 | Commercial paper
Assets
Held-to-maturity investments	19
Estimate of Fair Value Measurement | Level 3
Assets
Held-to-maturity investments	0
Estimate of Fair Value Measurement | Level 3 | Corporate debt securities
Assets
Held-to-maturity investments	0
Estimate of Fair Value Measurement | Level 3 | U.S. Treasury securities
Assets
Held-to-maturity investments	0
Estimate of Fair Value Measurement | Level 3 | U.S. government agency securities
Assets
Held-to-maturity investments	0
Estimate of Fair Value Measurement | Level 3 | Certificates of deposit
Assets
Held-to-maturity investments	0
Estimate of Fair Value Measurement | Level 3 | Commercial paper
Assets
Held-to-maturity investments	$ 0