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Goodwill and Intangible Assets, Net (Schedule of Finite-Lived Intangible Assets, Net) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived intangible Assets Rollforward      
Gross asset value $ 809 $ 793  
Acquisitions 16 [1] 25 [2]  
Exchange rate changes 44 (9)  
Gross asset value 869 809 $ 793
Accumulated amortization (612) (595)  
Amortization (22) (24) (24)
Exchange rate changes 38 7  
Accumulated amortization (672) (612) (595)
Net book value 197    
Licenses [Member]      
Finite-Lived intangible Assets Rollforward      
Gross asset value 42 42  
Acquisitions 0 0  
Exchange rate changes 2 0  
Gross asset value 44 42 42
Accumulated amortization (35) (33)  
Amortization (1) (2)  
Exchange rate changes 2 0  
Accumulated amortization (38) (35) (33)
Net book value 6    
Customer-Related Intangible Assets [Member]      
Finite-Lived intangible Assets Rollforward      
Gross asset value 667 651  
Acquisitions 16 25  
Exchange rate changes 41 (9)  
Gross asset value 724 667 651
Accumulated amortization (504) (495)  
Amortization (17) (16)  
Exchange rate changes 34 7  
Accumulated amortization (555) (504) (495)
Net book value 169    
Developed Technology [Member]      
Finite-Lived intangible Assets Rollforward      
Gross asset value 44 44  
Acquisitions 0 0  
Exchange rate changes 1 0  
Gross asset value 45 44 44
Accumulated amortization (35) (32)  
Amortization (3) (3)  
Exchange rate changes 2 0  
Accumulated amortization (40) (35) (32)
Net book value 5    
Covenants Not to Compete and Other [Member]      
Finite-Lived intangible Assets Rollforward      
Gross asset value 56 56  
Acquisitions 0 0  
Exchange rate changes 0 0  
Gross asset value 56 56 56
Accumulated amortization (38) (35)  
Amortization (1) (3)  
Exchange rate changes 0 0  
Accumulated amortization (39) $ (38) $ (35)
Net book value $ 17    
Next Polymers [Member]      
Finite-Lived intangible Assets Rollforward      
Weighted average life of intangible assets acquired   13 years  
Elotex [Member]      
Finite-Lived intangible Assets Rollforward      
Weighted average life of intangible assets acquired 14 years    
[1] Related to intangible assets acquired from Elotex with a weighted average amortization period of 14 years.
[2] Related to intangible assets acquired from Next Polymers with a weighted average amortization period of 13 years.