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Leases and Commitments Operating Lease Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Leases [Abstract]    
Lease, Right-Of-Use Asset $ 574 $ 587
Lease, Right-Of-Use Asset $ 574 587
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Other Liabilities, Current  
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Debt payable within one year  
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Other Assets  
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property, Plant and Equipment, Net  
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other Liabilities  
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Long-Term Debt  
Other Liabilities [Member]    
Leases [Abstract]    
Lease, Liability $ 594 585
Lease, Liability 594 585
Operating lease 130 133
Long-term Debt [Member]    
Finance Lease, Liability, Noncurrent 60 20
Other Assets    
Operating Lease, Right-of-Use Asset 488 540
Property, Plant and Equipment    
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization 86 47
Other Current Liabilities    
Operating lease 130 133
Finance Lease, Liability, Current 11 9
Other Noncurrent Liabilities    
Operating Lease, Liability, Noncurrent $ 393 $ 423