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Property, Plant and Equipment-Net (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment-Net        
Gross property plant and equipment $ 13,925   $ 13,888  
Less: Accumulated depreciation and amortization 7,019   6,807  
Net property, plant and equipment 6,906   7,081  
Long-lived and intangible asset impairment     236  
Construction in progress expenditures incurred but not yet paid 22 $ 33 35 $ 43
Depreciation and amortization 205 200    
U.K.        
Property, Plant and Equipment-Net        
Long-lived assets 400      
Land        
Property, Plant and Equipment-Net        
Gross property plant and equipment 67   68  
Machinery and equipment(1)        
Property, Plant and Equipment-Net        
Gross property plant and equipment 12,763   12,757  
Long-lived and intangible asset impairment     169  
Changes in plant turnaround activity        
Balance at the beginning of the period 355 226 226  
Additions 5 10    
Depreciation (36) (25)    
Effect of exchange rate changes (1) 0    
Balance at the end of the period 323 $ 211 355 $ 226
Buildings and improvements(1)        
Property, Plant and Equipment-Net        
Gross property plant and equipment 916   915  
Long-lived and intangible asset impairment     5  
Construction in progress        
Property, Plant and Equipment-Net        
Gross property plant and equipment 179   148  
Long-lived and intangible asset impairment     $ 8  
Property, plant and equipment | U.K.        
Property, Plant and Equipment-Net        
Long-lived assets $ 360