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Stock-Based Compensation, TDS excluding U.S. Cellular, Nonvested shares and other stock compensation disclosures (Details) - TDS Parent Company - Common Shares - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restricted Stock Units
Stock based compensation, Nonvested shares rollforward, number of shares
Nonvested stock units, beginning of period - Number of shares	1,044,000
Granted number of shares	452,000
Vested number of shares	(341,000)
Forfeited number of shares	(25,000)
Nonvested stock units, end of period - Number of shares	1,130,000	1,044,000
Stock based compensation, Nonvested shares weighted average grant date fair value
Nonvested stock units - beginning of period weighted average grant date fair value	$ 24.70
Granted weighted average grant date fair value	27.87	$ 27.57	$ 25.26
Vested weighted average grant date fair value	21.26
Forfeited weighted average grant date fair value	26.46
Nonvested stock units - end of period weighted average grant date fair value	$ 26.97	24.70
Fair value of vested stock units	$ 10		$ 8
Shares issued and granted under stock compensation plans
Granted number of shares	452,000
Performance Shares
Stock based compensation, Nonvested shares rollforward, number of shares
Granted number of shares	97,000
Nonvested stock units, end of period - Number of shares	97,000
Stock based compensation, Nonvested shares weighted average grant date fair value
Granted weighted average grant date fair value	$ 29.45
Nonvested stock units - end of period weighted average grant date fair value	$ 29.45
Shares issued and granted under stock compensation plans
Granted number of shares	97,000
Deferred Compensation Stock Units
Stock based compensation, Nonvested shares weighted average grant date fair value
Weighted average grant date fair value	$ 27.94	$ 25.36	$ 23.27
Shares issued and granted under stock compensation plans
Vested number of shares, unissued	108,000
Vested number of shares, unissued, fair value	$ 3
Deferred Compensation Stock Units | Maximum
Stock based compensation, Nonvested shares weighted average grant date fair value
Fair value of vested stock units	$ 1	$ 1	$ 1
Non-Employee Directors' Plan
Shares issued and granted under stock compensation plans
Shares issued	27,000	28,000	33,000

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested but were not issued.

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

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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.

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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).

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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).

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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.

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

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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