Debt Obligations (Changes in Debt Obligations) (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($)
Changes In Short-Term Debt Obligations [Roll Forward]
Short-term debt - commercial paper beginning balance	$ 1,517
Additions	3,685
Payments, Foreign Currency Translation and Accretion	(4,538)
Short-term debt - commercial paper ending balance	664
Changes in Long-Term Debt Obligations [Roll Forward]
Total long-term debt at beginning of period	4,313
Additions	(539)
Payments, Foreign Currency Translation and Accretion	(117)
Total long-term debt at end of period	4,735
Changes In Debt Obligations [Roll Forward]
Total debt obligations at beginning of period	5,830
Additions	4,224
Payments, Foreign Currency Translation and Accretion	(4,655)
Total debt obligations at end of period	5,399
Senior Notes \| 2026 Notes
Changes in Long-Term Debt Obligations [Roll Forward]
Long-term debt obligations at beginning of period	498
Additions	0
Payments, Foreign Currency Translation and Accretion	0
Long-term debt obligations at end of period	498
Senior Notes \| 2029 Notes
Changes in Long-Term Debt Obligations [Roll Forward]
Long-term debt obligations at beginning of period	676
Additions	0
Payments, Foreign Currency Translation and Accretion	(39)
Long-term debt obligations at end of period	637
Senior Notes \| 2030 Notes
Changes in Long-Term Debt Obligations [Roll Forward]
Long-term debt obligations at beginning of period	676
Additions	0
Payments, Foreign Currency Translation and Accretion	(39)
Long-term debt obligations at end of period	637
Senior Notes \| 2050 Notes
Changes in Long-Term Debt Obligations [Roll Forward]
Long-term debt obligations at beginning of period	486
Additions	0
Payments, Foreign Currency Translation and Accretion	0
Long-term debt obligations at end of period	486
Senior Notes \| 2031 Notes
Changes in Long-Term Debt Obligations [Roll Forward]
Long-term debt obligations at beginning of period	643
Additions	0
Payments, Foreign Currency Translation and Accretion	1
Long-term debt obligations at end of period	644
Senior Notes \| 2040 Notes
Changes in Long-Term Debt Obligations [Roll Forward]
Long-term debt obligations at beginning of period	644
Additions	0
Payments, Foreign Currency Translation and Accretion	0
Long-term debt obligations at end of period	644
Senior Notes \| 2033 Notes
Changes in Long-Term Debt Obligations [Roll Forward]
Long-term debt obligations at beginning of period	694
Additions	0
Payments, Foreign Currency Translation and Accretion	(41)
Long-term debt obligations at end of period	653
Senior Notes \| 2052 Notes
Changes in Long-Term Debt Obligations [Roll Forward]
Long-term debt obligations at beginning of period	0
Additions	(541)
Payments, Foreign Currency Translation and Accretion	0
Long-term debt obligations at end of period	541
2022 Credit Facility
Changes in Long-Term Debt Obligations [Roll Forward]
Unamortized debt issuance expense, beginning balance	(4)
Additions	(2)
Payments, Foreign Currency Translation and Accretion	1
Unamortized debt issuance expense, ending balance	(5)
Commercial paper
Changes In Short-Term Debt Obligations [Roll Forward]
Short-term debt - commercial paper beginning balance	420
Additions	3,685
Payments, Foreign Currency Translation and Accretion	(3,441)
Short-term debt - commercial paper ending balance	664
Short-term notes \| 2022 Notes
Changes In Short-Term Debt Obligations [Roll Forward]
Short-term debt - commercial paper beginning balance	598
Additions	0
Payments, Foreign Currency Translation and Accretion	(598)
Short-term debt - commercial paper ending balance	0
Short-term notes \| 2024 Notes
Changes In Short-Term Debt Obligations [Roll Forward]
Short-term debt - commercial paper beginning balance	499
Additions	0
Payments, Foreign Currency Translation and Accretion	(499)
Short-term debt - commercial paper ending balance	$ 0

Changes In Debt Obligations [Roll Forward]

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Changes In Short-Term Debt Obligations [Roll Forward]

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Payments (Accretions) And Other Of Long-Term And Short-Term Debt

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

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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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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