Represents the number of categories in which the entity categorizes the products and services.

No definition available.

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- Definition

Operating Lease, Lease Income, Percent Of Operating Revenue

+ References

No definition available.

+ Details

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- Definition

Revenue from Contract with Customer, Contract Term

+ References

No definition available.

+ Details

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- Definition

Revenue from Contract with Customer, Length of Customer Life

+ References

No definition available.

+ Details

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045

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- Definition

Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919372-209981

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123420820&loc=SL77919311-209978

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 50
-Paragraph 6A
-URI http://asc.fasb.org/extlink&oid=124502072&loc=SL77927221-108306

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- Definition

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.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Revenue Recognition - Additional Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) category	Jun. 30, 2020 USD ($)
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Lease income \| $	$ 327	$ 333	$ 659	$ 666
Percent of operating revenue	7.00%	6.00%	7.00%	6.00%
Revenue recognized \| $	$ 58	$ 59	$ 483	$ 554
Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract term			1 year
Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract term			5 years
Weighted Average \| Consumer Customers
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Length of customer life			30 months
Weighted Average \| Business Customers
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Length of customer life			30 months
Business
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Number of categories of products and services \| category			4
Mass Markets
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Number of categories of products and services \| category			4