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Income Taxes (Details 4)
$ in Millions, $ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2024
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
CAD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Operating Loss Carryforwards [Line Items]              
Less: Net earnings attributable to noncontrolling interest         $ 259.0 $ 313.0 $ 591.0
Liability (refund) adjustment from settlement with taxing authority         (39.0)    
Transfer pricing arbitration         0.0 0.0 69.0
State income taxes, net of federal         8.0 44.0 143.0
Income tax expense (benefit)         (285.0) (410.0) (1,158.0)
Undistributed earnings         14.0 9.0  
State tax credits         11.0 16.0  
Unrecognized tax benefits increase in period         8.0    
Additions for tax positions taken during prior years         7.0 69.0  
Unrecognized tax benefits   $ 181.0   $ 181.0 230.0 222.0 181.0
Unrecognized tax benefits that would impact effective tax rate         49.0    
Additions for tax positions taken during the current year         1.0 5.0  
Reductions related to settlements with tax jurisdictions         0.0 33.0  
Interest expense and penalties related to potential income taxes         8.0 (4.0) 66.0
Deferred Tax Assets, Valuation Allowance         107.0 194.0  
Income Tax Examination, Interest Refund         36.0    
Income Tax Examination, Refund Adjustment from Settlement with Taxing Authority, Interest         3.0    
Interest expense and penalties              
Interest expense and penalties related to potential income taxes         8.0 (4.0) 66.0
Accrued interest expense and penalties              
Amount recognized in consolidated balance sheets for accrued interest and penalties related to income taxes         55.0 51.0  
State Tax Authority              
Operating Loss Carryforwards [Line Items]              
Operating loss carryforwards         56.0    
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration         15.0    
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration         41.0    
Foreign Tax Jurisdiction              
Operating Loss Carryforwards [Line Items]              
Operating loss carryforwards         49.0    
Tax credit carryforward valuation allowance   44.0   44.0     44.0
Unrecognized tax benefits increase in period             26.0
Increase (decrease) in amount of valuation allowance           11.0  
Deferred Tax Assets, Valuation Allowance           55.0  
Foreign Tax Jurisdiction | United Kingdom              
Operating Loss Carryforwards [Line Items]              
Increase (decrease) in amount of valuation allowance         (11.0) (7.0)  
Foreign Tax Jurisdiction | Canada | Capital Loss Carryforward              
Operating Loss Carryforwards [Line Items]              
Increase (decrease) in amount of valuation allowance         (83.0)    
Domestic Tax Jurisdiction              
Operating Loss Carryforwards [Line Items]              
Income taxes receivable   51.0   51.0     51.0
State and Local Jurisdiction and Foreign Tax Authority              
Operating Loss Carryforwards [Line Items]              
Decrease resulting from prior period tax positions           33.0  
Canada Revenue Agency | State Tax Authority | Tax Years 2006-2011              
Operating Loss Carryforwards [Line Items]              
State income taxes, net of federal             9.0
Canada Revenue Agency | Foreign Tax Jurisdiction              
Operating Loss Carryforwards [Line Items]              
Additions for tax positions taken during prior years           $ 74.0 154.0
Payments for other taxes   267.0 $ 363        
Income Tax Examination, Interest Refund $ 21.0            
Income Tax Examination, Refund Adjustment from Settlement with Taxing Authority, Interest $ 2.0            
Canada Revenue Agency | Foreign Tax Jurisdiction | Tax Years 2006-2011              
Operating Loss Carryforwards [Line Items]              
Liability (refund) adjustment from settlement with taxing authority   (129.0)   (129.0)     (129.0)
Foreign tax contingency             78.0
Interest on income taxes accrued   102.0   102.0     102.0
Income taxes paid       224.0      
His Majesty's Revenue and Customs (HMRC) | Foreign Tax Jurisdiction              
Operating Loss Carryforwards [Line Items]              
Tax credit carryforward valuation allowance   $ 24.0   $ 24.0     $ 24.0
Alberta Tax and Revenue Administration | Foreign Tax Jurisdiction              
Operating Loss Carryforwards [Line Items]              
Liability (refund) adjustment from settlement with taxing authority         (16.0)    
Income Tax Examination, Interest Refund         15.0    
Income Tax Examination, Refund Adjustment from Settlement with Taxing Authority, Interest         $ 1.0