Income Taxes (Details Textuals) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Examination [Line Items]
Actual tax rates	28.10%	13.80%	33.30%	13.70%
U.S. Tax Act discrete tax (benefit) charge	$ 14		$ 32
Internal Revenue Service (IRS) [Member] | Earliest Tax Year [Member]
Income Tax Examination [Line Items]
Open tax years by major tax jurisdiction			2016
Internal Revenue Service (IRS) [Member] | Tax Year 2017 [Member]
Income Tax Examination [Line Items]
Open tax years by major tax jurisdiction			2017
Internal Revenue Service (IRS) [Member] | Tax Year 2018 [Member]
Income Tax Examination [Line Items]
Open tax years by major tax jurisdiction			2018