Period over which performance is measured in an equity-based payment award.

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- Definition

Accumulated dividend equivalents granted during period

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No definition available.

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Weighted average per share amount at which grantees can acquire shares of common stock by accumulating dividend equivalents.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Change in units based on approved performance factors

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No definition available.

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Change in units based on approved performance factors, Weighted Average Grant Date Fair Value

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No definition available.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
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- Definition

Percentage of vesting of award under share-based payment arrangement.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Subparagraph (a)(1)
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-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- References

No definition available.

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Stock-Based Compensation - TDS excluding UScellular, Performance Share Units (Details) - Common Shares - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Shares issued and granted under stock compensation plans
Award vesting period	3 years
Performance Share Units \| TDS
Stock based compensation, Nonvested shares rollforward, number of shares
Nonvested stock units, beginning of period - Number of shares (in shares)	1,349,000
Granted number of shares (in shares)	1,343,000
Vested number of shares (in shares)	(391,000)
Change in units based on approved performance factors (in shares)	10,000
Forfeited number of shares (in shares)	(216,000)
Accumulated dividend equivalents (in shares)	106,000
Nonvested stock units, end of period - Number of shares (in shares)	2,201,000	1,349,000
Stock based compensation, Nonvested shares weighted average grant date fair value
Nonvested stock units - beginning of period weighted average grant date fair value (USD per share)	$ 19.81
Granted weighted average grant date fair value (USD per share)	7.14	$ 17.42	$ 25.36
Vested weighted average grant date fair value (USD per share)	19.15
Change in units based on approved performance factors weighted average grant date fair value (USD per share)	19.15
Forfeited weighted average grant date fair value (USD per share)	16.79
Accumulated dividend equivalents, weighted average grant date fair value (USD per share)	13.21
Nonvested stock units - end of period weighted average grant date fair value (USD per share)	$ 12.17	$ 19.81
Shares issued and granted under stock compensation plans
Award vesting period	3 years
Fair value of vested stock units	$ 5	$ 5	$ 3
Incremental expense of plan modification	$ 2
Performance Share Units \| TDS \| 2021 and 2022 grants
Shares issued and granted under stock compensation plans
Performance period	3 years
Performance Share Units \| TDS \| 2023 grants
Shares issued and granted under stock compensation plans
Performance period	1 year
Performance Share Units \| TDS \| Market-based \| 2023 grants
Shares issued and granted under stock compensation plans
Performance period	3 years
Performance Share Units \| Discretionary \| TDS \| 2020 grants
Shares issued and granted under stock compensation plans
Performance share awards target	35.00%
Performance Share Units \| Minimum \| TDS \| 2021 and 2022 grants
Shares issued and granted under stock compensation plans
Performance share awards target	0.00%
Performance Share Units \| Minimum \| TDS \| 2023 grants
Shares issued and granted under stock compensation plans
Performance share awards target	0.00%
Performance Share Units \| Minimum \| TDS \| Market-based \| 2023 grants
Shares issued and granted under stock compensation plans
Performance share awards target	0.00%
Performance Share Units \| Maximum \| TDS \| 2021 and 2022 grants
Shares issued and granted under stock compensation plans
Performance share awards target	200.00%
Performance Share Units \| Maximum \| TDS \| 2023 grants
Shares issued and granted under stock compensation plans
Performance share awards target	150.00%
Performance Share Units \| Maximum \| TDS \| Market-based \| 2023 grants
Shares issued and granted under stock compensation plans
Performance share awards target	160.00%