Changes in Accumulated Other Comprehensive Income (Loss) (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	$ (50)	$ (158)	$ (140)
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	$ 0	$ 0	$ 0