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Noncontrolling Interests (Tables) | 9 Months Ended
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Sep. 30, 2021
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net [Abstract] |
Noncontrolling interests | The following schedule discloses the effects of Net income attributable to TDS shareholders and changes in TDS’ ownership interest in UScellular on TDS’ equity:
Nine Months Ended September 30, | 2021 |  | 2020
(Dollars in millions) |  |  |
Net income attributable to TDS shareholders | $ | 126 |  |  | $ | 212 |
Transfers (to) from noncontrolling interests |  |  |
Change in TDS' Capital in excess of par value from UScellular's issuance of UScellular shares | (48) |  |  | (38) |
Change in TDS' Capital in excess of par value from UScellular's repurchases of UScellular shares | 11 |  |  | 14 |
Net transfers (to) from noncontrolling interests | (37) |  |  | (24) |
Net income attributable to TDS shareholders after transfers (to) from noncontrolling interests | $ | 89 |  |  | $ | 188 |

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- Definition The tabular disclosure of the effects of any changes in a parent's ownership interest in a subsidiary on the equity attributable to the parent if the ownership interests in a subsidiary changes during the period. The changes represented by this element did not result in the deconsolidation of the subsidiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4M -URI http://asc.fasb.org/extlink&oid=120409616&loc=SL4591554-111686 + Details
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