v3.25.1
Contingencies (Federal Government's Lawsuit) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2024
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2022
Federal Government's Lawsuit        
Loss Contingencies [Line Items]        
Loss contingency, corrective statements in newspapers, period     4 months  
Loss contingency, corrective statements on television, period     1 year  
Loss contingency, corrective statements, onserts total period   2 years    
Implementation of Corrective Communications [Member]        
Loss Contingencies [Line Items]        
Loss contingency, corrective statements, onserts period   14 days    
Loss contingency, corrective statements, onserts consecutive total period   3 months    
Implementation of Corrective Communications [Member] | Federal Government's Lawsuit        
Loss Contingencies [Line Items]        
Loss contingency accrual, provision $ 15     $ 28