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Short-Term Borrowings, Long-Term Debt and Available Credit Facilities Short-term borrowings and finance lease obligations (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Feb. 08, 2022
Dec. 31, 2021
Mar. 31, 2021
Short-term Debt [Line Items]        
Long-term Debt Payable within one year $ 0   $ 1 $ 1
Finance Lease, Liability, Current 1   1 1
Short-term borrowings and finance lease obligations 1,018   17 1,250
Commercial Paper [Member]        
Short-term Debt [Line Items]        
Short-term borrowings 984   0 1,218
Securities Sold under Agreements to Repurchase [Member]        
Short-term Debt [Line Items]        
Short-term borrowings   $ 500    
Other loans - various currencies [Member]        
Short-term Debt [Line Items]        
Short-term borrowings 33   15 0
Repurchase Agreements [Member] | Securities Sold under Agreements to Repurchase [Member]        
Short-term Debt [Line Items]        
Short-term borrowings $ 0   $ 0 $ 30