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Consolidated Statement Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 57	$ 43
Change related to retirement plan
Amortization of prior service cost	(1)	(1)
Comprehensive income	56	42
Less: Net income attributable to noncontrolling interests, net of tax	18	6
Comprehensive income attributable to TDS shareholders	$ 38	$ 36

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References

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-Publisher FASB
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-Topic 220
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Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.

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