Short And Long-Term Debt Loss on the Early Extinguishment of Debt and Write-Off of Financing Costs (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Debt Disclosure [Abstract]
Loss on the early extinguishment of debt	[1]	$ 0	$ 5

[1] Loss on the early extinguishment of debt is recorded in Corporate and Other.