DEBT - Narrative (Details) $ / shares in Units, € in Millions		1 Months Ended							6 Months Ended	12 Months Ended
		Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Apr. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Apr. 30, 2020 USD ($) day $ / shares	Aug. 31, 2019 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021 EUR (€)	Mar. 31, 2021 EUR (€)	Aug. 31, 2014 USD ($)	May 31, 2013 USD ($)
Debt Instrument [Line Items]
Loss on early extinguishment of debt	[1]									$ 242,000,000	$ 0	$ 0
Senior Notes
Debt Instrument [Line Items]
Payment to redeem debt				$ 2,000,000,000
Carrying value of long-term debt		$ 10,200,000,000								$ 10,200,000,000	$ 10,300,000,000
0.75% Convertible Senior Notes due May 2025 | Convertible Senior Notes
Debt Instrument [Line Items]
Face amount of debt						$ 863,000,000
Stated interest rate		0.75%				0.75%				0.75%	0.75%		0.75%
Payments of debt issuance costs											$ 19,000,000
Conversion price (in dollars per share) | $ / shares						$ 1,886.44
Ratio of closing share price to conversion price as a condition for conversion of the convertible notes						130.00%
If-converted value over the aggregate principal amount										$ 166,000,000
Effective interest rate						4.10%
Debt discount related to convertible notes, net of tax						$ 100,000,000
Debt discount related to convertible notes, before tax						$ 130,000,000
Outstanding Principal Amount		$ 863,000,000								$ 863,000,000	$ 863,000,000
0.9% Convertible Senior Notes due September 2021 | Convertible Senior Notes
Debt Instrument [Line Items]
Face amount of debt															$ 1,000,000,000
Stated interest rate															0.90%
Payments related to principal amount			$ 1,000,000,000
Cash payment of the conversion value in excess of the principal amount			$ 86,000,000
Effective interest rate															3.18%
Debt discount related to convertible notes, net of tax															$ 83,000,000
Debt discount related to convertible notes, before tax															$ 143,000,000
0.35% Convertible Senior Notes due June 2020 | Convertible Senior Notes
Debt Instrument [Line Items]
Face amount of debt																$ 1,000,000,000
Stated interest rate																0.35%
Payments related to principal amount					$ 1,000,000,000
Cash payment of the conversion value in excess of the principal amount					$ 245,000,000
Effective interest rate																3.13%
0.1% (€950 Million) Senior Notes due March 2025 | Senior Notes
Debt Instrument [Line Items]
Face amount of debt | €													€ 950
Stated interest rate		0.10%								0.10%			0.10%	0.10%
Effective interest rate	[2]													0.30%
Outstanding Principal Amount		$ 1,080,000,000								$ 1,080,000,000				€ 950
0.5% (€750 Million) Senior Notes due March 2028 | Senior Notes
Debt Instrument [Line Items]
Face amount of debt | €													€ 750
Stated interest rate		0.50%								0.50%			0.50%	0.50%
Effective interest rate	[2]													0.63%
Outstanding Principal Amount		$ 853,000,000								$ 853,000,000				€ 750
4.1% Senior Notes due April 2025 | Senior Notes
Debt Instrument [Line Items]
Stated interest rate											4.10%
Outstanding Principal Amount											$ 1,000,000,000
Payment to redeem debt				1,100,000,000
4.5% Senior Notes due April 2027 | Senior Notes
Debt Instrument [Line Items]
Stated interest rate											4.50%
Outstanding Principal Amount											$ 750,000,000
Payment to redeem debt				$ 868,000,000
4.1% Senior Notes Due April 2025 And 4.1% Senior Notes Due April 2027 | Senior Notes
Debt Instrument [Line Items]
Loss on early extinguishment of debt										242,000,000
Level 2
Debt Instrument [Line Items]
Estimated market value of outstanding senior notes		12,100,000,000								12,100,000,000	14,000,000,000
Minimum | 0.75% Convertible Senior Notes due May 2025 | Convertible Senior Notes
Debt Instrument [Line Items]
Consecutive days the closing sales price of common stock must exceed a specified percentage of conversion price to trigger conversion feature of note (in days) | day						20
Additional payment to debt holder, settled in shares, aggregate value of shares						$ 0
Minimum | Euro-Denominated Debt | Designated as Hedging Instrument
Debt Instrument [Line Items]
Carrying value of the portions of Euro-denominated debt, including accrued interest, designated as a net investment hedge										2,500,000,000	1,800,000,000
Maximum | 0.75% Convertible Senior Notes due May 2025 | Convertible Senior Notes
Debt Instrument [Line Items]
Consecutive days the closing sales price of common stock must exceed a specified percentage of conversion price to trigger conversion feature of note (in days) | day						30
Additional payment to debt holder, settled in shares, aggregate value of shares						$ 235,000,000
Maximum | Euro-Denominated Debt | Designated as Hedging Instrument
Debt Instrument [Line Items]
Carrying value of the portions of Euro-denominated debt, including accrued interest, designated as a net investment hedge										5,100,000,000	3,200,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity							$ 2,000,000,000	$ 2,000,000,000
Term of revolving credit facility							5 years	5 years
Line of credit, outstanding		$ 0								0	0
Repayments of borrowings under credit facility									$ 400,000,000
Proceeds from borrowings under credit facility									$ 400,000,000
Weighted-average interest rate									3.50%
Debt instrument, minimum liquidity covenant, amount											4,500,000,000
Debt instrument, covenant, required minimum liquidity on a pro forma basis required for cash distribution and share repurchases											6,000,000,000
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Revolving credit facility commitment fee percentage on undrawn balances							0.07%
Revolving Credit Facility | Minimum | Euro Interbank Offered Rate
Debt Instrument [Line Items]
Reference rate		0.00%
Revolving Credit Facility | Minimum | Sterling Overnight Index Average
Debt Instrument [Line Items]
Reference rate		0.00%
Revolving credit facility interest rate		0.875%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Revolving credit facility commitment fee percentage on undrawn balances							0.20%
Revolving Credit Facility | Maximum | Sterling Overnight Index Average
Debt Instrument [Line Items]
Revolving credit facility interest rate		1.50%
Revolving Credit Facility | Rate 1 | Minimum | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Reference rate							0.00%
Revolving credit facility interest rate							0.875%
Revolving Credit Facility | Rate 1 | Maximum | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Revolving credit facility interest rate							1.50%
Revolving Credit Facility | Rate 2B | U. S. Federal Funds Rate
Debt Instrument [Line Items]
Revolving credit facility interest rate							0.50%
Revolving Credit Facility | Rate 2C | One Month LIBOR
Debt Instrument [Line Items]
Revolving credit facility interest rate							1.00%
Revolving Credit Facility | Rate 2C | Minimum
Debt Instrument [Line Items]
Revolving credit facility interest rate							0.00%
Revolving Credit Facility | Rate 2C | Minimum | One Month LIBOR
Debt Instrument [Line Items]
Reference rate							0.00%
Revolving Credit Facility | Rate 2C | Maximum
Debt Instrument [Line Items]
Revolving credit facility interest rate							0.50%
Letter of Credit
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity							$ 80,000,000
Letters of credit outstanding		$ 4,000,000								$ 4,000,000	$ 4,000,000
Swingline Loans
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity							$ 100,000,000

[1] See Note 12 for additional information related to the loss on early extinguishment of debt.

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