Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities
Net income	$ 90	$ 107
Add (deduct) adjustments to reconcile net income to net cash flows from operating activities
Depreciation, amortization and accretion	345	317
Bad debts expense	48	40
Stock-based compensation expense	25	17
Deferred income taxes, net	27	9
Equity in earnings of unconsolidated entities	(84)	(78)
Distributions from unconsolidated entities	76	70
(Gain) loss on asset disposals, net	7	2
(Gain) loss on sale of business and other exit costs, net	(2)	0
(Gain) loss on license sales and exchanges, net	(2)	(17)
Other operating activities	2	2
Changes in assets and liabilities from operations
Accounts receivable	3	43
Equipment installment plans receivable	(11)	(47)
Inventory	(4)	(3)
Accounts payable	(7)	(35)
Customer deposits and deferred revenues	8	(23)
Accrued taxes	3	6
Other assets and liabilities	(48)	(45)
Net cash provided by operating activities	476	365
Cash flows from investing activities
Cash paid for additions to property, plant and equipment	(282)	(173)
Cash paid for licenses	(255)	(2)
Cash received from investments	11	50
Cash paid for investments	(11)	0
Cash received from divestitures and exchanges	32	21
Other investing activities	(1)	3
Net cash used in investing activities	(506)	(101)
Cash flows from financing activities
Repayment of long-term debt	(10)	(10)
Common Shares reissued for benefit plans, net of tax payments	(8)
Common Shares reissued for benefit plans, net of tax payments		0
Distributions to noncontrolling interests	(2)	(4)
Other financing activities	(1)	(5)
Net cash used in financing activities	(21)	(19)
Net increase (decrease) in cash, cash equivalents and restricted cash	(51)	245
Cash, cash equivalents and restricted cash
Beginning of period	583	352
End of period	$ 532	$ 597