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Long-term Financing and Sales of Receivables - Credit Quality of Long-Term Receivables and Allowance for Credit Losses (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total Long-term Receivable	$ 40	$ 49
Financing receivables	13	20
Current Billed Due
Debt Instrument [Line Items]
Financing receivables	1	1
Past Due Under 90 Days
Debt Instrument [Line Items]
Financing receivables	1	0
Past Due Over 90 Days
Debt Instrument [Line Items]
Financing receivables	3	2
Municipal leases secured tax exempt
Debt Instrument [Line Items]
Total Long-term Receivable	22	28
Municipal leases secured tax exempt | Current Billed Due
Debt Instrument [Line Items]
Financing receivables	1	0
Municipal leases secured tax exempt | Past Due Under 90 Days
Debt Instrument [Line Items]
Financing receivables	1	0
Municipal leases secured tax exempt | Past Due Over 90 Days
Debt Instrument [Line Items]
Financing receivables	1	0
Commercial loans and leases secured
Debt Instrument [Line Items]
Total Long-term Receivable	18	21
Commercial loans and leases secured | Current Billed Due
Debt Instrument [Line Items]
Financing receivables	0	1
Commercial loans and leases secured | Past Due Under 90 Days
Debt Instrument [Line Items]
Financing receivables	0	0
Commercial loans and leases secured | Past Due Over 90 Days
Debt Instrument [Line Items]
Financing receivables	$ 2	$ 2

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