Annual report pursuant to Section 13 and 15(d)

Statements of Consolidated Changes in Equity (Parenthetical)

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Statements of Consolidated Changes in Equity (Parenthetical) - $ / shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Statement of Stockholders' Equity [Abstract]      
Common Stock, Dividends, Per Share, Declared $ 0.05 $ 0 $ 0