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BORROWINGS AND LINES OF CREDIT - Long-term Debt (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Feb. 28, 2021
Dec. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]      
Long-term debt, gross   $ 9,500 $ 10,000
Other (including project financing obligations and finance leases)   267 308
Discounts and debt issuance costs   (71) (81)
Total debt   9,696 10,227
Current portion of long-term debt   183 191
Long-term debt   9,513 10,036
Interest expense, debt, financing fees expensed     5
1.923% Notes due February 15, 2023 | Unsecured Debt      
Debt Instrument [Line Items]      
Interest Rate 1.923%    
Long-term debt, gross   0 500
Prepayment amount $ 17 17  
Interest expense, debt, financing fees expensed $ 2 $ 2  
2.242% Notes due February 15, 2025 | Unsecured Debt      
Debt Instrument [Line Items]      
Interest Rate   2.242%  
Long-term debt, gross   $ 2,000 2,000
2.493% Notes due February 15, 2027 | Unsecured Debt      
Debt Instrument [Line Items]      
Interest Rate   2.493%  
Long-term debt, gross   $ 1,250 1,250
2.722% Notes due February 15, 2030 | Unsecured Debt      
Debt Instrument [Line Items]      
Interest Rate   2.722%  
Long-term debt, gross   $ 2,000 2,000
2.700% Notes due February 15, 2031 | Unsecured Debt      
Debt Instrument [Line Items]      
Interest Rate   2.70%  
Long-term debt, gross   $ 750 750
3.377% Notes due April 5, 2040 | Unsecured Debt      
Debt Instrument [Line Items]      
Interest Rate   3.377%  
Long-term debt, gross   $ 1,500 1,500
3.577% Notes due April 5, 2050 | Unsecured Debt      
Debt Instrument [Line Items]      
Interest Rate   3.577%  
Long-term debt, gross   $ 2,000 $ 2,000