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Noncontrolling Interests (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Noncontrolling Interest [Abstract] |  |  |
Net income attributable to TDS shareholders | $ 156 | $ 226 | $ 121
Transfer (to) from the noncontrolling interests |  |  |
Change in TDS’ Capital in excess of par value from UScellular's issuance of UScellular shares | (49) | (38) | (23)
Change in TDS’ Capital in excess of par value from UScellular’s repurchases of UScellular shares | 17 | 14 | 6
Purchase of ownership in subsidiaries from noncontrolling interests | 0 | (9) | 0
Net transfers (to) from noncontrolling interests | (32) | (33) | (17)
Net income attributable to TDS shareholders after transfers (to) from noncontrolling interests | 124 | $ 193 | $ 104
Redeemable noncontrolling interest |  |  |
Settlement value of mandatorily redeemable noncontrolling interests | 21 |  |
Carrying value of mandatorily redeemable noncontrolling interests | $ 6 |  |

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