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Fair Value Measurements - Schedule of Pension Plan Assets at Fair Value by Level (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value $ 2,327 $ 3,016  
Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 2,327 3,016 $ 3,000
Pension Plan | Total      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 1,265 1,893  
Pension Plan | Total | Common Stock      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 335 487  
Pension Plan | Total | Mutual Funds      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 29 14  
Pension Plan | Total | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 157 108  
Pension Plan | Total | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 647 1,013  
Pension Plan | Total | Government Securities      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 88 173  
Pension Plan | Total | Asset-backed Securities, Derivatives and Other      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 9 98  
Pension Plan | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 521 609  
Pension Plan | Level 1 | Common Stock      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 335 487  
Pension Plan | Level 1 | Mutual Funds      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 29 14  
Pension Plan | Level 1 | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 157 108  
Pension Plan | Level 1 | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 0 0  
Pension Plan | Level 1 | Government Securities      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 0 0  
Pension Plan | Level 1 | Asset-backed Securities, Derivatives and Other      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 0 0  
Pension Plan | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 744 1,284  
Pension Plan | Level 2 | Common Stock      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 0 0  
Pension Plan | Level 2 | Mutual Funds      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 0 0  
Pension Plan | Level 2 | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 0 0  
Pension Plan | Level 2 | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 647 1,013  
Pension Plan | Level 2 | Government Securities      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 88 173  
Pension Plan | Level 2 | Asset-backed Securities, Derivatives and Other      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value 9 98  
Pension Plan | Investments measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Investments at Fair Value $ 1,062 $ 1,123