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Operating Segments (Sales by Geographical Location of the Customer) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of geographical areas [Line Items]      
Sales $ 5,271 $ 5,556 $ 5,418
% of sales 100.00% 100.00% 100.00%
USA [Member]      
Disclosure of geographical areas [Line Items]      
Sales $ 840 $ 903 $ 1,091
% of sales 16.00% 16.00% 20.00%
China [Member]      
Disclosure of geographical areas [Line Items]      
Sales $ 802 $ 848 $ 724
% of sales 15.00% 15.00% 13.00%
Brazil [Member]      
Disclosure of geographical areas [Line Items]      
Sales $ 581 $ 656 $ 594
% of sales 11.00% 12.00% 11.00%
United Kingdom [Member]      
Disclosure of geographical areas [Line Items]      
Sales $ 347 $ 382 $ 328
% of sales 7.00% 7.00% 6.00%
Germany [Member]      
Disclosure of geographical areas [Line Items]      
Sales $ 334 $ 365 $ 378
% of sales 6.00% 7.00% 7.00%
France [Member]      
Disclosure of geographical areas [Line Items]      
Sales $ 257 $ 267 $ 265
% of sales 5.00% 5.00% 5.00%
Spain [Member]      
Disclosure of geographical areas [Line Items]      
Sales $ 249 $ 262 $ 264
% of sales 5.00% 5.00% 5.00%
Israel [Member]      
Disclosure of geographical areas [Line Items]      
Sales $ 241 $ 223 $ 171
% of sales 5.00% 4.00% 3.00%
India [Member]      
Disclosure of geographical areas [Line Items]      
Sales $ 178 $ 211 $ 200
% of sales 3.00% 4.00% 4.00%
All others [Member]      
Disclosure of geographical areas [Line Items]      
Sales $ 1,326 $ 1,314 $ 1,282
% of sales 25.00% 23.00% 24.00%