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Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
May 06, 2021
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Statement of Stockholders' Equity [Abstract]        
Common Stock Dividends Declared   $ 241 $ 219  
Common Stock Dividends Declared (in dollars per share) $ 1.00 $ 0.4125 $ 0.375 $ 0.375