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Loans Payable, Long-Term Debt and Leases - Debt (Details) $ in Millions	1 Months Ended
	Mar. 31, 2019 USD ($)
Debt Instrument [Line Items]
Face amount of debt	$ 5,000
Net proceeds from offering	5,000
2.90% Notes Due 2024
Debt Instrument [Line Items]
Face amount of debt	$ 750
Stated interest rate (as percent)	2.90%
3.40% Notes Due 2029
Debt Instrument [Line Items]
Face amount of debt	$ 1,750
Stated interest rate (as percent)	3.40%
3.90% Notes Due 2039
Debt Instrument [Line Items]
Face amount of debt	$ 1,000
Stated interest rate (as percent)	3.90%
4.00% Notes Due 2049
Debt Instrument [Line Items]
Face amount of debt	$ 1,500
Stated interest rate (as percent)	4.00%

X

- 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
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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