DEBT (Outstanding Debt) (Details)	1 Months Ended		3 Months Ended			6 Months Ended
	Apr. 30, 2020 USD ($) Days $ / shares	Aug. 31, 2014 USD ($) Days $ / shares	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2015 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 EUR (€)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 EUR (€)	Aug. 31, 2017	Jun. 30, 2017	May 31, 2016	Nov. 30, 2015	Jun. 30, 2015	Dec. 31, 2014 USD ($)	Jun. 30, 2013 USD ($)	May 31, 2013 USD ($)
Debt Instrument
Outstanding Principal Amount, Long-Term Debt			$ 10,824,000,000			$ 10,824,000,000			$ 7,711,000,000
Unamortized Debt Discount and Debt Issuance Cost			(191,000,000)			(191,000,000)			(71,000,000)
Long-term Debt			10,633,000,000			10,633,000,000			7,640,000,000
Description of Senior Notes
Debt financing costs paid						38,000,000	$ 0
Bank Overdrafts			$ 56,000,000			56,000,000
0.35% Convertible Senior Notes due June 2020
Description of Senior Notes
Aggregate principal amount																		$ 1,000,000,000.0
Interest rate on long-term debt																		0.35%
Effective interest rate at debt origination or modification																		3.13%
Debt discount related to convertible notes, net of tax																	$ 92,000,000
Debt discount related to convertible notes, before tax																	$ 154,000,000
Amortization of debt discount included in interest expense				$ 1,000,000		1,000,000	2,000,000
PaymentsRelatedToConversionOfSeniorNotes						1,000,000,000.0
Debt Conversion Converted Instrument Cash						$ 245,000,000
0.9% Convertible Senior Notes due September 2021
Debt Instrument
Outstanding Principal Amount, Long-Term Debt									1,000,000,000
Unamortized Debt Discount and Debt Issuance Cost									(39,000,000)
Long-term Debt									$ 961,000,000
Description of Senior Notes
Aggregate principal amount		$ 1,000,000,000.0
Interest rate on long-term debt		0.90%	0.90%			0.90%		0.90%	0.90%	0.90%
Debt financing costs paid					$ 11,000,000
Convertible debt conversion price (in dollars per share) | $ / shares		$ 2,055.50
Ratio of closing share price to conversion price as a condition for conversion of the convertible notes, minimum		150.00%
Effective interest rate at debt origination or modification		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
0.8% (€1 Billion) Senior Notes due March 2022
Debt Instrument
Outstanding Principal Amount, Long-Term Debt			$ 1,123,000,000			$ 1,123,000,000			$ 1,123,000,000
Unamortized Debt Discount and Debt Issuance Cost			(2,000,000)			(2,000,000)			(3,000,000)
Long-term Debt			$ 1,121,000,000			$ 1,121,000,000			$ 1,120,000,000
Description of Senior Notes
Aggregate principal amount | €								€ 1,000,000,000		€ 1,000,000,000
Interest rate on long-term debt			0.80%			0.80%		0.80%	0.80%	0.80%
Effective interest rate at debt origination or modification												0.84%
2.15% (€750 Million) Senior Notes due November 2022
Debt Instrument
Outstanding Principal Amount, Long-Term Debt			$ 842,000,000			$ 842,000,000			$ 842,000,000
Unamortized Debt Discount and Debt Issuance Cost			(1,000,000)			(1,000,000)			(3,000,000)
Long-term Debt			$ 841,000,000			$ 841,000,000			$ 839,000,000
Description of Senior Notes
Aggregate principal amount | €								€ 750,000,000		€ 750,000,000
Interest rate on long-term debt			2.15%			2.15%		2.15%	2.15%	2.15%
Effective interest rate at debt origination or modification														2.20%
2.75% Senior Notes due March 2023
Debt Instrument
Outstanding Principal Amount, Long-Term Debt			$ 500,000,000			$ 500,000,000			$ 500,000,000
Unamortized Debt Discount and Debt Issuance Cost			(2,000,000)			(2,000,000)			(2,000,000)
Long-term Debt			$ 498,000,000			$ 498,000,000			$ 498,000,000
Description of Senior Notes
Interest rate on long-term debt			2.75%			2.75%		2.75%	2.75%	2.75%
Effective interest rate at debt origination or modification											2.78%
2.375% (€1 Billion) Senior Notes due September 2024
Debt Instrument
Outstanding Principal Amount, Long-Term Debt			$ 1,123,000,000			$ 1,123,000,000			$ 1,123,000,000
Unamortized Debt Discount and Debt Issuance Cost			(8,000,000)			(8,000,000)			(9,000,000)
Long-term Debt			$ 1,115,000,000			$ 1,115,000,000			$ 1,114,000,000
Description of Senior Notes
Aggregate principal amount | €								€ 1,000,000,000		€ 1,000,000,000
Interest rate on long-term debt			2.375%			2.375%		2.375%	2.375%	2.375%
Effective interest rate at debt origination or modification																2.48%
3.65% Senior Notes Due March 2025 [Member]
Debt Instrument
Outstanding Principal Amount, Long-Term Debt			$ 500,000,000			$ 500,000,000			$ 500,000,000
Unamortized Debt Discount and Debt Issuance Cost			(2,000,000)			(2,000,000)			(2,000,000)
Long-term Debt			$ 498,000,000			$ 498,000,000			$ 498,000,000
Description of Senior Notes
Interest rate on long-term debt			3.65%			3.65%		3.65%	3.65%	3.65%
Effective interest rate at debt origination or modification															3.68%
3.65% Senior Notes due March 2025
Description of Senior Notes
Effective interest rate at debt origination or modification	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
3.6% Senior Notes due June 2026
Debt Instrument
Outstanding Principal Amount, Long-Term Debt			$ 1,000,000,000			$ 1,000,000,000			$ 1,000,000,000
Unamortized Debt Discount and Debt Issuance Cost			(5,000,000)			(5,000,000)			(5,000,000)
Long-term Debt			$ 995,000,000			$ 995,000,000			$ 995,000,000
Description of Senior Notes
Interest rate on long-term debt			3.60%			3.60%		3.60%	3.60%	3.60%
Effective interest rate at debt origination or modification													3.62%
1.8% (€1 Billion) Senior Notes due March 2027
Debt Instrument
Outstanding Principal Amount, Long-Term Debt			$ 1,123,000,000			$ 1,123,000,000			$ 1,123,000,000
Unamortized Debt Discount and Debt Issuance Cost			(4,000,000)			(4,000,000)			(5,000,000)
Long-term Debt			$ 1,119,000,000			$ 1,119,000,000			$ 1,118,000,000
Description of Senior Notes
Aggregate principal amount | €								€ 1,000,000,000		€ 1,000,000,000
Interest rate on long-term debt			1.80%			1.80%		1.80%	1.80%	1.80%
Effective interest rate at debt origination or modification															1.80%
3.55% Senior Notes due March 2028
Debt Instrument
Outstanding Principal Amount, Long-Term Debt			$ 500,000,000			$ 500,000,000			$ 500,000,000
Unamortized Debt Discount and Debt Issuance Cost			(3,000,000)			(3,000,000)			(3,000,000)
Long-term Debt			$ 497,000,000			$ 497,000,000			$ 497,000,000
Description of Senior Notes
Interest rate on long-term debt			3.55%			3.55%		3.55%	3.55%	3.55%
Effective interest rate at debt origination or modification											3.56%
Convertible Debt
Description of Senior Notes
Interest expense related to debt			$ 21,000,000	16,000,000		$ 36,000,000	31,000,000
Amortization of debt discount included in interest expense			15,000,000	12,000,000		27,000,000	24,000,000
Coupon Interest expense			$ 4,000,000	$ 3,000,000		$ 7,000,000	$ 6,000,000
Debt, weighted average interest rate			3.20%	3.20%		3.30%	3.20%
0.75% Senior Convertible Notes Due May 2025 [Member] [Member]
Description of Senior Notes
Aggregate principal amount	$ 863,000,000
Interest rate on long-term debt	0.75%
Convertible debt 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, minimum	130.00%
Debt Issuance Costs, Gross	$ 19,000,000
Other Long-term Debt
Debt Instrument
Long-term Debt			$ 9,900,000,000			$ 9,900,000,000			$ 6,700,000,000
Description of Senior Notes
Interest expense related to debt			72,000,000	$ 41,000,000		114,000,000	$ 83,000,000
Coupon Interest expense			70,000,000	$ 40,000,000		110,000,000	$ 80,000,000
4.5% Senior Convertible Notes Due April 2027
Description of Senior Notes
Effective interest rate at debt origination or modification	4.54%
4.625% Senior Convertible Notes Due April 2030
Description of Senior Notes
Effective interest rate at debt origination or modification	4.65%
4.1% Senior Notes due April 2025 [Member]
Debt Instrument
Outstanding Principal Amount, Long-Term Debt	$ 1,000,000,000.0		1,000,000,000			1,000,000,000
Unamortized Debt Discount and Debt Issuance Cost			(5,000,000)			(5,000,000)
Long-term Debt			$ 995,000,000			$ 995,000,000
Description of Senior Notes
Interest rate on long-term debt	4.10%		4.10%			4.10%		4.10%
Effective interest rate at debt origination or modification	4.10%
0.75% Convertible Senior Notes due May 2025 [Member]
Debt Instrument
Outstanding Principal Amount, Long-Term Debt			$ 863,000,000			$ 863,000,000
Unamortized Debt Discount and Debt Issuance Cost			(141,000,000)			(141,000,000)
Long-term Debt			$ 722,000,000			$ 722,000,000
Description of Senior Notes
Interest rate on long-term debt			0.75%			0.75%		0.75%
4.5% Senior Notes Due April 2027 [Member]
Debt Instrument
Outstanding Principal Amount, Long-Term Debt	$ 750,000,000		$ 750,000,000			$ 750,000,000
Unamortized Debt Discount and Debt Issuance Cost			(6,000,000)			(6,000,000)
Long-term Debt			$ 744,000,000			$ 744,000,000
Description of Senior Notes
Interest rate on long-term debt	4.50%		4.50%			4.50%		4.50%
4.625% Senior Notes Due April 2030 [Member]
Debt Instrument
Outstanding Principal Amount, Long-Term Debt	$ 1,500,000,000		$ 1,500,000,000			$ 1,500,000,000
Unamortized Debt Discount and Debt Issuance Cost			(12,000,000)			(12,000,000)
Long-term Debt			$ 1,488,000,000			$ 1,488,000,000
Description of Senior Notes
Interest rate on long-term debt	4.625%		4.625%			4.625%		4.625%
Minimum | 0.9% Convertible Senior Notes due September 2021
Description of Senior Notes
Minimum and Maximum 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) | Days		20
Additional payment to debt holder, settled In shares, aggregate value		$ 0
Minimum | 0.75% Senior Convertible Notes Due May 2025 [Member] [Member]
Description of Senior Notes
Minimum and Maximum 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) | Days	20
Additional payment to debt holder, settled In shares, aggregate value	$ 0
Maximum | 0.9% Convertible Senior Notes due September 2021
Description of Senior Notes
Minimum and Maximum 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) | Days		30
Additional payment to debt holder, settled In shares, aggregate value		$ 375,000,000
Maximum | 0.75% Senior Convertible Notes Due May 2025 [Member] [Member]
Description of Senior Notes
Minimum and Maximum 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) | Days	30
Additional payment to debt holder, settled In shares, aggregate value	$ 235,000,000
Level 2
Description of Senior Notes
Estimated market value of outstanding debt			$ 13,000,000,000.0			$ 13,000,000,000.0			9,800,000,000
Designated as Hedging Instrument | Minimum | Euro-Denominated Debt
Description of Senior Notes
Notional amount of nonderivative instruments						1,800,000,000
Designated as Hedging Instrument | Maximum | Euro-Denominated Debt
Description of Senior Notes
Notional amount of nonderivative instruments						3,200,000,000
Short-term Debt [Member] | 0.35% Convertible Senior Notes due June 2020
Debt Instrument
Outstanding Principal Amount, Short-Term Debt									1,000,000,000
Unamortized Debt Discount and Debt Issuance Cost									(12,000,000)
Carrying Value, Short-term debt									988,000,000
Short-term Debt [Member] | 0.9% Convertible Senior Notes due September 2021
Debt Instrument
Outstanding Principal Amount, Short-Term Debt			1,000,000,000			1,000,000,000
Unamortized Debt Discount and Debt Issuance Cost			(27,000,000)			(27,000,000)
Carrying Value, Short-term debt			973,000,000			973,000,000
Recurring Basis
Debt Instrument
Debt Securities, Available-for-sale, Amortized Cost			12,663,000,000			12,663,000,000			10,751,000,000
Recurring Basis | Level 3
Debt Instrument
Debt Securities, Available-for-sale, Amortized Cost			250,000,000			250,000,000			250,000,000
Recurring Basis | Level 2
Debt Instrument
Debt Securities, Available-for-sale, Amortized Cost			504,000,000			504,000,000			2,945,000,000
Long-term Investments | Recurring Basis
Debt Instrument
Debt Securities, Available-for-sale, Amortized Cost			250,000,000			250,000,000			250,000,000
Long-term Investments | Recurring Basis | Level 3
Debt Instrument
Debt Securities, Available-for-sale, Amortized Cost			250,000,000			250,000,000			250,000,000
Long-term Investments | Recurring Basis | Level 2
Debt Instrument
Debt Securities, Available-for-sale, Amortized Cost			0			0			$ 0
Redeemable Convertible Preferred Stock [Member] | Long-term Investments
Description of Senior Notes
Carrying Value			$ 250,000,000			$ 250,000,000