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

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

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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No definition available.

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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.

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Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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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.

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Debt and Credit Agreements - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Nov. 15, 2018	Sep. 14, 2018	Feb. 20, 2018	May 31, 2017
Commercial Paper
Debt Instrument [Line Items]
Line of credit facility capacity			$ 1,000,000,000
Facility, amount outstanding	$ 0
4.25% Notes due 2029
Debt Instrument [Line Items]
Debt issued		$ 350,000,000
Interest rate		4.25%
4.75% Notes due 2048
Debt Instrument [Line Items]
Debt issued		$ 650,000,000
Interest rate		4.75%
3.80% Notes due 2028
Debt Instrument [Line Items]
Debt issued				$ 800,000,000
Interest rate				3.80%
4.30% Notes due 2048
Debt Instrument [Line Items]
Debt issued				$ 850,000,000
Interest rate				4.30%
4.65% Notes due 2068
Debt Instrument [Line Items]
Debt issued				$ 350,000,000
Interest rate				4.65%
3.25% Notes due 2027
Debt Instrument [Line Items]
Debt issued					$ 850,000,000
Interest rate					3.25%
Unsecured Revolving Credit Facility, Current \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility capacity	$ 1,000,000,000
Line of credit facility expiration date	May 21, 2020
Line of credit facility, amount outstanding	$ 0
Receivables Securitization Facility \| Line of Credit
Debt Instrument [Line Items]
Line of credit facility capacity	200,000,000
Facility, amount outstanding	$ 0