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Consolidated Statements of Shareholders' Equity (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]      
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax $ (4) $ 6 $ (8)
Other Comprehensive Income (Loss), Foreign Currency Translation Reclassification Adjustment from AOCI, Tax     0
Pension and post-retirement benefit plans (tax impact) 7 (13) (14)
Employee Stock Option And SARs Exercises Value, Tax   0 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax $ 20 $ 6 $ (2)