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Consolidated Statement of Cash Flows - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Cash flows from operating activities      
Net income $ 160 $ 233 $ 133
Add (deduct) adjustments to reconcile net income to net cash flows from operating activities      
Depreciation, amortization and accretion 678 683 702
Bad debts expense 56 72 107
Stock-based compensation expense 27 32 41
Deferred income taxes, net 41 130 (4)
Equity in earnings of unconsolidated entities (179) (179) (166)
Distributions from unconsolidated entities 176 189 161
(Gain) loss on asset disposals, net 23 25 19
(Gain) loss on sale of business and other exit costs, net (2) 0 (1)
(Gain) loss on license sales and exchanges, net 0 (5) 0
(Gain) loss on investments 0 (2) 0
Other operating activities 33 2 4
Changes in assets and liabilities from operations      
Accounts receivable (27) (8) (46)
Equipment installment plans receivable (116) (54) (97)
Inventory (27) 16 (20)
Accounts payable (57) 145 (69)
Customer deposits and deferred revenues 40 2 (8)
Accrued taxes (41) (57) (23)
Other assets and liabilities 17 13 (9)
Net cash provided by operating activities 802 1,237 724
Cash flows from investing activities      
Cash paid for additions to property, plant and equipment (724) (989) (650)
Cash paid for licenses (1,302) (171) (266)
Cash received from investments 3 1 29
Cash paid for investments 0 (3) (11)
Cash received from divestitures and exchanges 3 26 41
Advance payments for license acquisitions (20) (30) (5)
Other investing activities 4 3 (2)
Net cash used in investing activities (2,036) (1,163) (864)
Cash flows from financing activities      
Issuance of long-term debt 1,342 1,125 0
Repayment of long-term debt (1,118) (108) (116)
Common Shares reissued for benefit plans, net of tax payments (16) (11) (9)
Repurchase of Common Shares (31) (23) (21)
Payment of debt issuance costs (22) (38) (1)
Distributions to noncontrolling interests (3) (6) (4)
Payments to acquire additional interest in subsidiaries 0 (11) 0
Other financing activities (10) (2) (1)
Net cash provided by (used in) financing activities 142 926 (152)
Net increase (decrease) in cash, cash equivalents and restricted cash (1,092) 1,000 (292)
Cash, cash equivalents and restricted cash      
Beginning of period 1,291 291 583
End of period $ 199 $ 1,291 $ 291