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Borrowings Under Credit Facilities and Commercial Paper Program - Narrative (Details) | 3 Months Ended |  |
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Mar. 31, 2023 USD ($) Term bank | Mar. 31, 2023 CAD ($) Term bank | Dec. 31, 2022 USD ($) | [1]
Line of Credit Facility [Line Items] |  |  |
Number of banks in consortium | bank | 31 | 31 |
Borrowings outstanding | $ 0 |  | $ 0
Unsecured revolving credit facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Unsecured line of credit arrangement | 4,000,000,000 |  |
Borrowings outstanding | $ 0 |  |
Number of successive terms | Term | 2 | 2 |
Successive term | 6 months |  |
Available to borrow in alternate currencies (upto) | $ 1,000,000,000 |  |
Annual facility fee for each bank based on commitment amount | 0.15% |  |
Unsecured revolving credit facility | Credit Facility, Tranche Due 2026 |  |  |
Line of Credit Facility [Line Items] |  |  |
Unsecured line of credit arrangement | $ 1,000,000,000 |  |
Borrowings outstanding | 0 |  |
Unsecured revolving credit facility | Credit Facility, Tranche Due 2025 |  |  |
Line of Credit Facility [Line Items] |  |  |
Unsecured line of credit arrangement | 3,000,000,000 |  |
Borrowings outstanding | $ 0 |  |
Unsecured revolving credit facility | SOFR |  |  |
Line of Credit Facility [Line Items] |  |  |
Application margin over index, based on certain debt ratings | 0.775% |  |
Unsecured revolving credit facility | Accordion feature |  |  |
Line of Credit Facility [Line Items] |  |  |
Unsecured line of credit arrangement | $ 1,250,000,000 |  |
Term credit facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Unsecured line of credit arrangement | 1,000,000,000 |  |
Term credit facility, CAD denominated |  |  |
Line of Credit Facility [Line Items] |  |  |
Unsecured line of credit arrangement |  | $ 250,000,000 |
Term credit facility, CAD denominated | Accordion feature |  |  |
Line of Credit Facility [Line Items] |  |  |
Unsecured line of credit arrangement |  | $ 250,000,000 |
Commercial paper note program |  |  |
Line of Credit Facility [Line Items] |  |  |
Unsecured line of credit arrangement | $ 1,000,000,000 |  |
Commercial paper note program | Maximum |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt instrument, term | 397 days |  |
[1] | The consolidated balance sheet at December 31, 2022 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + 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(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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- Definition 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. + References No definition available. + Details
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- Definition 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. + 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(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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