Stockholders' Deficit (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Stockholders' Deficit [Abstract]
Total capital stock, shares authorized	400,000,000
Common stock, shares authorized	300,000,000	300,000,000
Preferred stock, shares authorized	100,000,000	100,000,000
Common stock, par value per share	$ 0.01	$ 0.01
Preferred stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares outstanding	0
Amount available for dividend payments, stock repurchases at period end	$ 200