The average effective interest rate during the reporting period.

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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.

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Interest and debt related expenses associated with nonoperating financing activities of the entity.

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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.

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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 borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Debt - 5-Year Revolving Credit Facility (Details) - Unsecured Debt - Credit Agreement - USD ($)		1 Months Ended	3 Months Ended
	Sep. 11, 2019	Mar. 31, 2020	Mar. 31, 2020
Revolving Credit Facility
Line of Credit Facility [Line Items]
Credit facility, term	5 years
Maximum borrowing capacity	$ 5,000,000,000.0
Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	150,000,000
Draw downs from lines of credit		$ 3,000,000,000.0
Borrowings outstanding		3,000,000,000.0	$ 3,000,000,000.0
Weighted average interest rate			2.19%
Remaining borrowing capacity		$ 2,000,000,000.0	$ 2,000,000,000.0
Interest expense and fees			$ 3,000,000
Swingline Sub-facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 500,000,000