Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019
Income Tax Examination [Line Items]
Effective income tax rate	0.80%	(10.80%)	(350.60%)	6.90%
State and Local Jurisdiction
Income Tax Examination [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 480,000,000		$ 480,000,000
Tax Year 2013-2014 [Member]
Income Tax Examination [Line Items]
Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Amount				$ 412
Forecast [Member]
Income Tax Examination [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					21.00%