v3.25.4
Allowance for credit losses - Financing Receivables Grouped by Credit Risk (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost $ 2,421 $ 2,417
Category A    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 590 224
Category B    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 551 633
Category C    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 1,280 1,560
Investment in finance leases    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 1,820 1,219
Investment in finance leases | Category A    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 590 214
Investment in finance leases | Category B    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 520 562
Investment in finance leases | Category C    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 710 443
Notes receivable    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 87 602
Notes receivable | Category A    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 0 0
Notes receivable | Category B    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 2 53
Notes receivable | Category C    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 85 549
Loans receivable    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 514 596
Loans receivable | Category A    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 0 10
Loans receivable | Category B    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost 29 18
Loans receivable | Category C    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Financing receivables at amortized cost $ 485 $ 568