Stock-Based Compensation - TDS, Overview (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock based compensation
Stock-based compensation expense	$ 42	$ 49	$ 53
Income tax benefit	(11)	(12)	(13)
Total stock-based compensation expense, net of income taxes	31	37	40
Unrecognized compensation cost for all stock-based compensation awards	$ 54
Weighted average period for recognition of unrecognized compensation cost for all stock-based compensation awards	1 year 10 months 24 days
Tax benefit from exercise of stock options and other awards	$ 7
Selling, general and administrative expense
Stock based compensation
Stock-based compensation expense	36	44	48
Cost of services expense
Stock based compensation
Stock-based compensation expense	6	5	5
Long-Term Incentive Plans \| Stock Options
Stock based compensation
Stock-based compensation expense	1	2	3
Long-Term Incentive Plans \| Restricted Stock Units
Stock based compensation
Stock-based compensation expense	28	29	30
Long-Term Incentive Plans \| Performance Share Units
Stock based compensation
Stock-based compensation expense	11	16	17
Long-Term Incentive Plans \| Deferred Compensation Stock Units
Stock based compensation
Stock-based compensation expense	0	0	1
Non-Employee Directors' Plan
Stock based compensation
Stock-based compensation expense	$ 2	$ 2	$ 2
Non-Employee Directors' Plan \| TDS \| Common Shares
Stock based compensation
Shares reserved	81,000
Shares issued	51,000	50,000	43,000
TDS Long-Term Incentive Plans \| TDS \| Common Shares
Stock based compensation
Shares reserved	20,700,000
Dividend Reinvestment Plan \| TDS \| Series A Common Shares
Stock based compensation
Shares reserved	198,000
Purchase price, percent	95.00%
Dividend Reinvestment Plan \| TDS \| Common Shares
Stock based compensation
Shares reserved	2,234,000
Purchase price, percent	95.00%

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Purchase price of common stock expressed as a percentage of its fair value.

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