Basis of Presentation (Details Textuals) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax provision	$ 624		$ 291	$ 2,042	$ 741
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2014-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax provision		$ 55