Annual report pursuant to Section 13 and 15(d)

DEBT AND FINANCING ARRANGEMENTS DEBT AND FINANCING ARRANGEMENTS - Average Interest Rate (Details)

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DEBT AND FINANCING ARRANGEMENTS DEBT AND FINANCING ARRANGEMENTS - Average Interest Rate (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Oct. 01, 2017
Debt Instrument [Line Items]      
Principal Value $ 23,633,000,000    
Senior notes | 1.125% senior notes      
Debt Instrument [Line Items]      
Debt instrument, stated interest rate percentage 1.125%   5.50%
Principal Value $ 375,000,000    
Maturity   Jan. 01, 2017  
Average Effective Percentage Rate 0.00% 1.51%  
Senior notes | 5.50% senior notes      
Debt Instrument [Line Items]      
Debt instrument, stated interest rate percentage 5.50%    
Principal Value $ 750,000,000    
Maturity Jan. 01, 2018    
Average Effective Percentage Rate 3.63% 3.45%  
Senior notes | 5.125% senior notes      
Debt Instrument [Line Items]      
Debt instrument, stated interest rate percentage 5.125%    
Principal Value $ 1,000,000,000.0    
Maturity Jan. 01, 2019    
Average Effective Percentage Rate 3.99% 2.98%  
Senior notes | 3.125% senior notes      
Debt Instrument [Line Items]      
Debt instrument, stated interest rate percentage 3.125%    
Principal Value $ 1,500,000,000    
Maturity Jan. 01, 2021    
Average Effective Percentage Rate 2.32% 1.34%  
Senior notes | 2.45% senior notes      
Debt Instrument [Line Items]      
Debt instrument, stated interest rate percentage 2.45%    
Principal Value $ 1,000,000,000    
Maturity Oct. 01, 2022    
Average Effective Percentage Rate 2.77% 1.78%