Borrowings (Details) - USD ($) $ in Millions	1 Months Ended
Feb. 28, 2018	Jun. 30, 2019
Schedule of Held-to-maturity Securities [Line Items]
Long-term Commercial Paper, Noncurrent		$ 470
Proceeds from Issuance of Debt	$ 992
3.2% Notes due 2023 [Member]
Schedule of Held-to-maturity Securities [Line Items]
Long-term Debt	$ 300
Stated interest rate	3.20%
3.75% Notes due 2028 [Member]
Schedule of Held-to-maturity Securities [Line Items]
Long-term Debt	$ 700
Stated interest rate	3.75%

Carrying value as of the balance sheet date of long-term unsecured obligations issued by corporations and other borrowers to investors (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
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Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Nominal or face amount used to calculate payments on a nonderivative instrument.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

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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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