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Supplemental Balance Sheet Data -Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Accounts payable | $ 110 | $ 85
Accrued natural gas costs | 168 | 106
Payroll and employee-related costs | 88 | 68
Accrued interest | 30 | 32
Other | 169 | 133
Total accounts payable and accrued expenses | $ 565 | $ 424

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- Definition Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred and payable for purchases of natural gas. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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