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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]          
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ (5,819) $ (5,598) $ (7,288) $ (8,450)  
Retained Earnings (Deficit)          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest         $ 5,400
AOCI Attributable to Parent          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest         $ 3,900