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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]      
Dividends Declared per Common Share $ 1.20 $ 1.00 $ 1.00
Accelerated Share Repurchases [Line Items]      
Accelerated share repurchases settlement receipt $ 250 $ 125 $ 75