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Taxes - Tax Rate Reconciliation (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Reconciliation of the statutory U.S. federal tax rate to the company's effective tax rate from continuing operations      
Statutory rate 21.00% 21.00% 35.00%
Enactment of U.S. tax reform 1.00% 18.00% 48.00%
Tax differential on foreign income (11.00%) (9.00%) (26.00%)
Intra-entity transfers 0.00% 0.00% (5.00%)
Domestic incentives (2.00%) (3.00%) (2.00%)
State and local (1.00%) (1.00%) 1.00%
Other (1.00%) (3.00%) (2.00%)
Effective rate 7.00% 23.00% 49.00%