Comprehensive Income (Loss) (Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (7)	$ (12)	$ (14)	$ (25)
Provision for income taxes	(10)	(14)	(12)	(15)
Net Income	$ 33	$ 40	35	45
Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Income			(4)	(4)
Unrealized Loss On Derivatives [Member] | Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense			(5)	(5)
Provision for income taxes			1	1
Net Income			$ (4)	$ (4)