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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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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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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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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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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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Weighted average interest rate of debt outstanding.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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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 (Schedule of Long-Term Debt) (Details) - USD ($)	12 Months Ended
Debt (Schedule of Long-Term Debt) (Details) - USD ($)	Dec. 31, 2020	Jun. 30, 2020	Feb. 29, 2020	Dec. 31, 2019
Long-Term Debt
Total debt	$ 19,643,806,000			$ 11,241,483,000
Less: unamortized debt issuance costs	(314,763,000)			(206,607,000)
Total debt, net of unamortized debt issuance costs	19,329,043,000			11,034,876,000
Less—current portion including commercial paper	(1,371,087,000)			(2,620,766,000)
Long-term portion	$ 17,957,956,000			$ 8,414,110,000
Weighted average interest rate	6.02%			3.99%
Unsecured UK Commercial paper
Long-Term Debt
Long-term debt	$ 409,319,000			$ 0
USD Commercial paper
Long-Term Debt
Long term debt, current interest rate (as a percent)	0.00%
Long-term debt	$ 0			1,434,180,000
Fixed rate debt:
Long-Term Debt
Long-term debt	11,024,809,000			5,215,452,000
Unsecured senior notes
Long-Term Debt
Long-term debt	2,464,994,000			1,746,280,000
Secured senior notes
Long-Term Debt
Long-term debt	3,895,166,000			662,398,000
Unsecured term loans
Long-Term Debt
Long-term debt	3,210,161,000			2,806,774,000
Convertible notes
Long-Term Debt
Long-term debt	1,454,488,000			0
Convertible notes \| Convertible Notes Due 2023
Long-Term Debt
Long term debt, stated interest rate (as a percent)		4.25%
Total variable rate debt
Long-Term Debt
Long-term debt	$ 8,405,632,000			5,795,773,000
Unsecured revolving credit facilities
Long-Term Debt
Long term debt, current interest rate (as a percent)	1.45%
Long-term debt	$ 3,289,000,000			165,000,000
Maximum borrowing capacity	$ 3,500,000,000
Unsecured revolving credit facilities \| Unsecured Revolving Credit Facility Due 2024
Long-Term Debt
Long term debt, current interest rate (as a percent)	1.54%
Maximum borrowing capacity	$ 1,900,000,000		$ 1,700,000,000
Long term debt, facility fee (as a percent)	0.20%
Unsecured revolving credit facilities \| Unsecured Revolving Credit Facility Due 2022
Long-Term Debt
Long term debt, current interest rate (as a percent)	1.54%
Maximum borrowing capacity	$ 1,600,000,000		$ 1,200,000,000
Long term debt, facility fee (as a percent)	0.20%
USD unsecured term loan
Long-Term Debt
Long-term debt	$ 4,002,249,000			3,519,853,000
Euro unsecured term loan
Long-Term Debt
Long-term debt	705,064,000			676,740,000
Finance lease liabilities
Long-Term Debt
Long-term debt	$ 213,365,000			$ 230,258,000
LIBOR \| Unsecured revolving credit facilities \| Unsecured Revolving Credit Facility Due 2024
Long-Term Debt
Margin on floating rate base (as a percent)	1.30%
LIBOR \| Unsecured revolving credit facilities \| Unsecured Revolving Credit Facility Due 2022
Long-Term Debt
Margin on floating rate base (as a percent)	1.30%
Minimum \| Unsecured senior notes
Long-Term Debt
Long term debt, stated interest rate (as a percent)	2.65%
Minimum \| Secured senior notes
Long-Term Debt
Long term debt, stated interest rate (as a percent)	7.25%
Minimum \| Unsecured term loans
Long-Term Debt
Long term debt, stated interest rate (as a percent)	2.53%
Minimum \| Convertible notes
Long-Term Debt
Long term debt, stated interest rate (as a percent)	2.88%
Minimum \| USD unsecured term loan
Long-Term Debt
Long term debt, current interest rate (as a percent)	0.74%
Minimum \| Euro unsecured term loan
Long-Term Debt
Long term debt, current interest rate (as a percent)	1.15%
Maximum \| Unsecured senior notes
Long-Term Debt
Long term debt, stated interest rate (as a percent)	9.13%
Maximum \| Secured senior notes
Long-Term Debt
Long term debt, stated interest rate (as a percent)	11.50%
Maximum \| Unsecured term loans
Long-Term Debt
Long term debt, stated interest rate (as a percent)	5.41%
Maximum \| Convertible notes
Long-Term Debt
Long term debt, stated interest rate (as a percent)	4.25%
Maximum \| USD unsecured term loan
Long-Term Debt
Long term debt, current interest rate (as a percent)	4.05%
Maximum \| Euro unsecured term loan
Long-Term Debt
Long term debt, current interest rate (as a percent)	1.58%