Long Term Debt, Current Maturities, Gross

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

The average effective interest rate during the reporting period.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Debt (Components of Debt) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Debt (Components of Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Aug. 31, 2020	Jul. 24, 2020	Mar. 31, 2020	Jul. 31, 2018	Jan. 31, 2015
Debt Instrument [Line Items]
Debt Instrument	$ 3,038	$ 3,171
Unamortized Issuance Expense	18	20
Unamortized Debt Discount	(1)	(1)
Current portion of long-term debt	207	0
Total debt	3,019	3,150
Long-term debt
Debt Instrument [Line Items]
Debt Instrument	2,831
Unamortized Issuance Expense	18
Unamortized Debt Discount	(1)
Total debt	$ 2,812
Line of Credit \| Variable rate (2.09% at March 31, 2021) 2018 revolving credit facility due April 2024
Debt Instrument [Line Items]
Variable interest rate	2.09%
Line of Credit \| Variable rate (2.09% at March 31, 2021) 2018 revolving credit facility due April 2024 \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt Instrument	$ 567
Unamortized Issuance Expense	0
Unamortized Debt Discount	0
Total debt	567
Line of Credit \| Variable rate (2.11% at December 31, 2020) 2018 term loan facility due April 2024
Debt Instrument [Line Items]
Debt Instrument		700
Unamortized Issuance Expense		0
Unamortized Debt Discount		0
Total debt		$ 700
Variable interest rate		2.11%
Senior Notes
Debt Instrument [Line Items]
Debt Instrument, current portion of long-term debt	207
Unamortized Issuance Expense	0
Unamortized Debt Discount	0
Current portion of long-term debt	207
Senior Notes \| 4.10% Senior Notes due March 2022
Debt Instrument [Line Items]
Debt Instrument, current portion of long-term debt	207
Debt Instrument		$ 207
Unamortized Issuance Expense	0	0
Unamortized Debt Discount	0	0
Current portion of long-term debt	$ 207
Total debt		$ 207
Stated interest rate	4.10%	4.10%			4.10%
Senior Notes \| 4.95% Senior Notes due January 2025
Debt Instrument [Line Items]
Debt Instrument	$ 856	$ 856
Unamortized Issuance Expense	4	4
Unamortized Debt Discount	(1)	(1)
Total debt	$ 851	$ 851
Stated interest rate	4.95%	4.95%		6.45%	4.95%	6.20%	4.95%
Senior notes							$ 1,000
Senior Notes \| 7.50% Senior Notes due April 2026
Debt Instrument [Line Items]
Debt Instrument	$ 618	$ 618
Unamortized Issuance Expense	5	6
Unamortized Debt Discount	0	0
Total debt	$ 613	$ 612
Stated interest rate	7.50%	7.50%			7.50%
Senior Notes \| 7.75% Senior Notes due October 2027
Debt Instrument [Line Items]
Debt Instrument	$ 440	$ 440
Unamortized Issuance Expense	4	5
Unamortized Debt Discount	0	0
Total debt	$ 436	$ 435
Stated interest rate	7.75%	7.75%			7.75%
Senior Notes \| 8.375% Senior Notes due September 2028
Debt Instrument [Line Items]
Debt Instrument	$ 350	$ 350
Unamortized Issuance Expense	5	5
Unamortized Debt Discount	0	0
Total debt	$ 345	$ 345
Stated interest rate	8.375%	8.375%	8.375%
Senior notes			$ 350
Other long-term assets \| Line of Credit \| Variable rate (2.09% at March 31, 2021) 2018 revolving credit facility due April 2024
Debt Instrument [Line Items]
Unamortized Issuance Expense	$ 11	$ 12