Debt Outstanding [Line Items]

No definition available.

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- Definition

Percentage Of Owned Subsidiaries Guaranteed Fixed- And Floating-Rate Notes

+ References

No definition available.

+ Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586

+ Details

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Balance Type:	credit
Period Type:	duration

- 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

+ Details

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of short-term debt outstanding calculated at point in time.

+ References

+ Details

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Debt (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Debt (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	May 31, 2018
Debt Outstanding [Line Items]
Interest payments	$ 434	$ 312	$ 93
Percentage of owned subsidiaries guaranteed fixed- and floating-rate notes	100.00%
Credit facility, maximum borrowing capacity	$ 5,000
Credit Facility \| 364-day Committed Bank Credit Facility
Debt Outstanding [Line Items]
Credit facility, maximum borrowing capacity	$ 2,000
Debt instrument term	364 days
Commercial Paper
Debt Outstanding [Line Items]
Commercial paper outstanding	$ 0	850
Weighed average interest rate	2.568%
LIBOR \| Floating Rate Notes Due May 2020
Debt Outstanding [Line Items]
Long-term debt	$ 500	500
LIBOR \| Floating Rate Notes Due May 2021
Debt Outstanding [Line Items]
Long-term debt	500	$ 500
Notes
Debt Outstanding [Line Items]
Debt issued				$ 7,500
Credit Facility \| Multi-year Facility Expiring November 2020
Debt Outstanding [Line Items]
Credit facility, maximum borrowing capacity	1,000
Credit Facility \| Multi Year Facility Expiring March 2023
Debt Outstanding [Line Items]
Credit facility, maximum borrowing capacity	$ 2,000