Business, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of Reportable Segments | segment	3
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholder's Equity, Including Portion Attributable to Noncontrolling Interest	$ (6,782)	$ (6,514)	$ (7,723)	$ (8,536)
Retained Earnings (Deficit)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholder's Equity, Including Portion Attributable to Noncontrolling Interest					$ 5,200
AOCI Attributable to Parent
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholder's Equity, Including Portion Attributable to Noncontrolling Interest					$ 3,900