Comprehensive Income (Loss) (Summary of the Activity in AOCI, Net of the Related Tax Effects) (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of period		$ (18)	$ (33)
Other comprehensive income before reclassifications:
Pre-tax amount		28	5
Tax provision		6	1
After-tax amount		22	4
Amounts reclassified from accumulated other comprehensive income	[1]	4	6
Net current period other comprehensive income		26	10
Balance at the end of period		8	(24)
Unrealized Loss On Derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of period		(18)	(33)
Other comprehensive income before reclassifications:
Pre-tax amount		29	5
Tax provision		6	1
After-tax amount		22	4
Amounts reclassified from accumulated other comprehensive income	[1]	4	6
Net current period other comprehensive income		27	10
Balance at the end of period		$ 8	$ (24)

[1] Amounts are net of tax. See reclassifications out of AOCI below for further details.