Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2021
Revenue Recognition [Abstract]
Disaggregation Of Revenue	Successor Predecessor For the eight For the four For the year For the year months ended months ended ended ended December 31, April 30, December 31, December 31, ($ in millions) 2021 2021 2020 2019 Data and Internet services $ 2,224  $ 1,125  $ 3,478  $ 3,756  Voice services 1,091  647  2,085  2,500  Video services 397  223  789  1,005  Other 246  125  429  477  Revenue from contracts with customers (1) 3,958  2,120  6,781  7,738  Subsidy and other regulatory revenue (2) 222  111  374  369  Total revenue $ 4,180  $ 2,231  $ 7,155  $ 8,107  Successor Predecessor For the eight For the four For the year For the year months ended months ended ended ended December 31, April 30, December 31, December 31, ($ in millions) 2021 2021 2020 2019 Consumer (3) $ 2,125  $ 1,133  $ 3,609  $ 4,175  Business and Wholesale 1,833  987  3,172  3,563  Revenue from contracts with customers (1) 3,958  2,120  6,781  7,738  Subsidy and other regulatory revenue (2) 222  111  374  369  Total revenue $ 4,180  $ 2,231  $ 7,155  $ 8,107  (1)Includes $21 million for the four months ended April 30, 2021 and $42 million for the eight months ended December 31, 2021, and $67 million, and $70 million of lease revenue for the years ended December 31, 2020, and 2019 respectively.(2)Includes $30 million in transition services provided to the purchaser in connection with the divestiture of the Northwest Operations for the year ended December 31, 2020.(3)Due to changes in methodology during the second quarter of 2021, historical periods have been updated to reflect the comparable amounts.
Changes In Contract Assets And Contract Liabilities	Contract Assets Contract Liabilities ($ in millions) Current Noncurrent Current Noncurrent Balance at December 31, 2020 (Predecessor) $ 6  $ 9  $ 58  $ 20  Revenue recognized included in opening contract balance (4) - (23) (3) Cash received, excluding amounts recognized as revenue - - 22  2  Balance at April 30, 2021 (Predecessor) $ 2  $ 9  $ 57  $ 19  Fresh start accounting adjustments (2) (9) (42) (18) Balance at April 30, 2021 (Predecessor) $ - $ - $ 15  $ 1  Balance at April 30, 2021 (Successor) $ - $ - $ 15  $ 1  Revenue recognized included in opening contract balance - - (20) (2) Credits granted, excluding amounts recognized as revenue - - 30  14  Reclassified between current and concurrent - - 2  (2) Balance at December 31, 2021 (Successor) $ - $ - $ 27  $ 11  Contract Assets Contract Liabilities ($ in millions) Current Noncurrent Current Noncurrent Balance at January 1, 2019 (Predecessor) $ 37  $ 8  $ 41  $ 21  Revenue recognized included in opening contract balance (34) - (68) (12) Cash received, excluding amounts recognized as revenue - - 85  11  Credits granted, excluding amounts recognized as revenue 3  1  - - Reclassified between Current and Noncurrent - - - - Balance at December 31, 2020 (Predecessor) $ 6  $ 9  $ 58  $ 20
Performance Obligations, Revenue	Successor ($ in millions) Revenue from contracts with customers 2022 $ 758 2023 383 2024 214 2025 96 2026 53 Thereafter 91 Total $ 1,595