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Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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Face (par) amount of debt instrument at time of issuance.

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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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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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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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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 long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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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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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Debt (Narrative) (Details)			1 Months Ended				3 Months Ended	12 Months Ended
Debt (Narrative) (Details)	Apr. 15, 2021 USD ($)	Apr. 01, 2021 USD ($)	Dec. 31, 2021 USD ($) Facility	Dec. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jan. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2021 USD ($) Facility	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Apr. 09, 2021 USD ($)	Apr. 08, 2021 USD ($)	Apr. 02, 2021 USD ($)	May 31, 2020 USD ($)	Jan. 31, 2019 USD ($)
Debt Instrument [Line Items]
Short-term debt			$ 17,000,000	$ 517,000,000				$ 17,000,000	$ 517,000,000
Commercial paper outstanding			$ 0					0
Borrowings from term-loan and credit facilities								$ 0	1,000,000,000	$ 300,000,000
Number of facilities terminated \| Facility			2					2
Repayments of principal in 2022			$ 17,000,000					$ 17,000,000
Repayments of principal in 2023			616,000,000					616,000,000
Repayments of principal in 2024			1,600,000,000					1,600,000,000
Repayments of principal in 2025			518,000,000					518,000,000
Repayments of principal in 2026			1,200,000,000					1,200,000,000
Other Debt Facilities
Debt Instrument [Line Items]
Revolving credit facility, amount outstanding			0	0				0	0
Debt instrument, unused borrowing capacity			$ 508,000,000	573,000,000				$ 508,000,000	$ 573,000,000
Senior notes – 2.90% due 2051
Debt Instrument [Line Items]
Interest rate			2.90%					2.90%
2.75% Senior Debt Obligations Due January 2022
Debt Instrument [Line Items]
Repayments of debt			$ 500,000,000
Interest rate			2.75%					2.75%
Senior notes – 2.25% due 2030
Debt Instrument [Line Items]
Interest rate			2.25%					2.25%
Commercial Paper
Debt Instrument [Line Items]
Short-term debt											$ 2,000,000,000	$ 1,500,000,000
Revolving credit facility \| Amended Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, borrowing capacity		$ 1,800,000,000											$ 2,800,000,000
Revolving credit facility, amount outstanding			$ 0					$ 0
Debt instrument, term		5 years
Revolving credit facility \| 364-day Facility
Debt Instrument [Line Items]
Revolving credit facility, borrowing capacity		$ 1,000,000,000
Debt instrument, term		364 days
Term loan facility \| $500 Million One-Year Term Loan Facility
Debt Instrument [Line Items]
Revolving credit facility, borrowing capacity						$ 500,000,000
Debt instrument, term						1 year
Term loan facility \| $500 Million Two-Year Term Loan Facility
Debt Instrument [Line Items]
Revolving credit facility, borrowing capacity						$ 500,000,000
Debt instrument, term						2 years
Term loan facility \| $500 Million One-Year Term Loan and $500 Million Two-Year Term Loan
Debt Instrument [Line Items]
Borrowings from term-loan and credit facilities							$ 1,000,000,000
Senior Notes
Debt Instrument [Line Items]
Debt instrument, amount															$ 5,000,000,000
Repayments of debt	$ 500,000,000			700,000,000	$ 500,000,000
Senior Notes \| 2.31% Senior Debt Obligations Due 2031
Debt Instrument [Line Items]
Debt instrument, amount			400,000,000					400,000,000
Senior Notes \| Senior notes – 2.90% due 2051
Debt Instrument [Line Items]
Debt instrument, amount			$ 350,000,000					$ 350,000,000
Senior Notes \| Senior notes – 2.25% due 2030
Debt Instrument [Line Items]
Debt instrument, amount														$ 750,000,000
Floating Rate Notes
Debt Instrument [Line Items]
Repayments of debt				$ 300,000,000