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Goodwill and Other Intangibles - Components of Intangible Assets Subject to Amortization (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Finite-lived Intangible Assets [Roll Forward]    
Balance at beginning of period $ 6,921 $ 4,244
Purchases 519 475
Acquisition of businesses 35 2,803
Usage/Sales/Retirements/Transfers (480) (474)
Write-off of fully amortized balances (157) (72)
Other (19) 4
Balance at end of period 6,540 6,921
Less accumulated amortization (3,632) (2,994)
Net carrying amount $ 2,908 $ 3,927
Weighted average useful life, years 5 years 10 years
Airtron    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron $ (279)  
Net carrying amount 81  
STP | Disposal Group, Disposed of by Sale, Not Discontinued Operations    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron   $ (59)
Renewables Energy Certificates    
Finite-lived Intangible Assets [Roll Forward]    
Carrying value 213 177
Emission Allowances    
Finite-lived Intangible Assets [Roll Forward]    
Balance at beginning of period 628 624
Purchases 22 10
Acquisition of businesses 0 0
Usage/Sales/Retirements/Transfers (19) 0
Write-off of fully amortized balances 0 (1)
Other (6) (5)
Balance at end of period 625 628
Less accumulated amortization (538) (533)
Net carrying amount 87 95
Emission Allowances | Airtron    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron 0  
Emission Allowances | STP | Disposal Group, Disposed of by Sale, Not Discontinued Operations    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron   0
Customer and Supply Contracts    
Finite-lived Intangible Assets [Roll Forward]    
Balance at beginning of period 609 635
Purchases 0 0
Acquisition of businesses 0 0
Usage/Sales/Retirements/Transfers 0 0
Write-off of fully amortized balances 0 (28)
Other (3) 2
Balance at end of period 606 609
Less accumulated amortization (399) (328)
Net carrying amount 207 281
Customer and Supply Contracts | Airtron    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron 0  
Customer and Supply Contracts | STP | Disposal Group, Disposed of by Sale, Not Discontinued Operations    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron   0
Customer Relationships    
Finite-lived Intangible Assets [Roll Forward]    
Balance at beginning of period 3,464 1,730
Purchases 0 0
Acquisition of businesses 35 1,773
Usage/Sales/Retirements/Transfers 0 0
Write-off of fully amortized balances (146) (43)
Other (5) 4
Balance at end of period 3,093 3,464
Less accumulated amortization (1,555) (1,300)
Net carrying amount 1,538 2,164
Customer Relationships | Airtron    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron (255)  
Customer Relationships | STP | Disposal Group, Disposed of by Sale, Not Discontinued Operations    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron   0
Marketing Partnerships    
Finite-lived Intangible Assets [Roll Forward]    
Balance at beginning of period 295 284
Purchases 0 0
Acquisition of businesses 0 10
Usage/Sales/Retirements/Transfers 0 0
Write-off of fully amortized balances 0 0
Other (1) 1
Balance at end of period 294 295
Less accumulated amortization (193) (170)
Net carrying amount 101 125
Marketing Partnerships | STP | Disposal Group, Disposed of by Sale, Not Discontinued Operations    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron   0
Technology    
Finite-lived Intangible Assets [Roll Forward]    
Balance at beginning of period 860 0
Purchases 0 0
Acquisition of businesses 0 860
Usage/Sales/Retirements/Transfers 0 0
Write-off of fully amortized balances 0 0
Other 1 0
Balance at end of period 861 860
Less accumulated amortization (457) (230)
Net carrying amount 404 630
Technology | STP | Disposal Group, Disposed of by Sale, Not Discontinued Operations    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron   0
Trade Names    
Finite-lived Intangible Assets [Roll Forward]    
Balance at beginning of period 841 679
Purchases 0 0
Acquisition of businesses 0 160
Usage/Sales/Retirements/Transfers 0 0
Write-off of fully amortized balances (11) 0
Other (5) 2
Balance at end of period 801 841
Less accumulated amortization (443) (401)
Net carrying amount 358 440
Trade Names | Airtron    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron (24)  
Trade Names | STP | Disposal Group, Disposed of by Sale, Not Discontinued Operations    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron   0
Other    
Finite-lived Intangible Assets [Roll Forward]    
Balance at beginning of period 224 292
Purchases 497 465
Acquisition of businesses 0 0
Usage/Sales/Retirements/Transfers (461) (474)
Write-off of fully amortized balances 0 0
Other 0 0
Balance at end of period 260 224
Less accumulated amortization (47) (32)
Net carrying amount 213 192
Other | Airtron    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron $ 0  
Other | STP | Disposal Group, Disposed of by Sale, Not Discontinued Operations    
Finite-lived Intangible Assets [Roll Forward]    
Sale of Airtron   (59)
Net carrying amount   $ 47