Debt Narrative (Details) $ in Millions	Feb. 15, 2019 USD ($)
Debt Instrument [Line Items]
Debt Instrument, Issuance Date	Feb. 15, 2019
Debt Instrument, Face Amount	$ 1,500
Proceeds from Debt, Net of Issuance Costs	1,451
Two Point Eight Percent due on March 1, 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 400
Debt Instrument, Maturity Date	Mar. 01, 2024
Debt Instrument, Interest Rate, Stated Percentage	2.80%
Three Point Two Percent due on March 1, 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 400
Debt Instrument, Maturity Date	Mar. 01, 2029
Debt Instrument, Interest Rate, Stated Percentage	3.20%
Three Point Five Percent due on March 1, 2039 [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 400
Debt Instrument, Maturity Date	Mar. 01, 2039
Debt Instrument, Interest Rate, Stated Percentage	3.50%
Three Point Eight Two Five Percent due on March 1, 2059 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 300
Debt Instrument, Maturity Date	Mar. 01, 2059
Debt Instrument, Interest Rate, Stated Percentage	3.825%

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

+ References

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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.

+ References

No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

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