v3.20.4

Sales Of Receivables (Finance Receivables) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net receivables sold	$ 15,760	$ 11,604	$ 0
Cash proceeds received	15,888	11,989	0
Guarantee obligation recorded	271	530	0
Equipment Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross receivables sold	7,270	9,921	9,391
Net receivables sold	7,026	9,483	8,871
Cash proceeds received	6,089	8,189	7,488
Deferred purchase price recorded	1,021	1,451	1,578
Guarantee obligation recorded	$ 157	$ 341	$ 361

X

- Definition

The amount of significant reductions in the period of other assets (current, noncurrent, or unclassified), before allowance, imputed interest and trade-in right guarantees.

+ References

No definition available.

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- Definition

Amount of significant reductions in the period of other assets (current, noncurrent, or unclassified), net of allowance, imputed interest and trade-in right guarantees.

+ References

No definition available.

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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.

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- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

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- Definition

The cash inflow associated with the sale of receivables arising from the financing of goods and services.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

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- Definition

A device of credit enhancement where a part of the purchase price for the receivable/ payable is retained to serve as a cash collateral.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
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