Subsequent Events (Details) - Senior Notes - Subsequent Event	Mar. 27, 2020 USD ($)
Subsequent Event [Line Items]
Redemption price, percentage	100.00%
$1.0 Billion Senior Unsecured Notes Maturing March 27, 2025
Subsequent Event [Line Items]
Face amount	$ 1,000,000,000
Interest rate	2.40%
Redemption period prior to scheduled maturity	1 month
$1.0 Billion Senior Unsecured Notes Maturing March 27, 2027
Subsequent Event [Line Items]
Face amount	$ 1,000,000,000
Interest rate	2.75%
Redemption period prior to scheduled maturity	2 months
$1.5 Billion Senior Unsecured Notes Maturing March 27, 2030
Subsequent Event [Line Items]
Face amount	$ 1,500,000,000
Interest rate	2.85%
Redemption period prior to scheduled maturity	3 months
$1.0 Billion Senior Unsecured Notes Maturing March 27, 2040
Subsequent Event [Line Items]
Face amount	$ 1,000,000,000
Interest rate	3.25%
Redemption period prior to scheduled maturity	6 months
$1.5 Billion Senior Unsecured Notes Maturing March 27, 2050
Subsequent Event [Line Items]
Face amount	$ 1,500,000,000
Interest rate	3.38%
Redemption period prior to scheduled maturity	6 months
$6 Billion Senior Unsecured Notes With Various Maturities
Subsequent Event [Line Items]
Face amount	$ 6,000,000,000

Debt Instrument, Redemption Period, Prior To Scheduled Maturity

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- 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
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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- Definition

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
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
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-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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