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 ($)
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Principal Value $ 24,814,000,000  
Senior notes | 5.125% senior notes    
Debt Instrument [Line Items]    
Debt instrument, stated interest rate percentage 5.125%  
Principal Value $ 1,000,000,000  
Average Effective Percentage Rate 0.00% 4.48%
Senior notes | 3.125% senior notes    
Debt Instrument [Line Items]    
Debt instrument, stated interest rate percentage 3.125%  
Principal Value $ 1,500,000,000  
Average Effective Percentage Rate 1.60% 2.59%
Senior notes | 2.45% senior notes    
Debt Instrument [Line Items]    
Debt instrument, stated interest rate percentage 2.45%  
Principal Value $ 1,000,000,000  
Average Effective Percentage Rate 1.55% 3.03%