CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
OPERATING ACTIVITIES
Net income	$ 407	$ 180
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,573	1,829
Deferred income taxes	400	(126)
Loss on the sale of data centers and colocation business	0	119
Impairment of assets	28	11
Provision for uncollectible accounts	83	78
Share-based compensation	95	43
Changes in current assets and liabilities:
Accounts receivable	35	71
Accounts payable	(173)	(112)
Accrued income and other taxes	(147)	29
Other current assets and liabilities, net	(276)	(306)
Retirement benefits	(195)	(56)
Changes in other noncurrent assets and liabilities, net	400	(92)
Other, net	19	74
Net cash provided by operating activities	3,249	1,742
INVESTING ACTIVITIES
Capital expenditures	(1,576)	(1,610)
Proceeds from the sale of data centers and colocation business, less cash sold	0	1,473
Proceeds from sale of property, plant and equipment and other assets	125	48
Other investing, net	(61)	(5)
Net cash used in investing activities	(1,512)	(94)
FINANCING ACTIVITIES
Net proceeds from issuance of long-term debt	130	6,608
Proceeds from financing obligation	0	378
Payments of long-term debt	(123)	(1,530)
Net payments on revolving line of credit	(405)	(370)
Dividends paid	(1,156)	(590)
Other financing, net	(36)	(11)
Net cash (used in) provided by financing activities	(1,590)	4,485
Effect of exchange rates on cash, cash equivalents, restricted cash and securities	(2)	0
Net increase in cash, cash equivalents, restricted cash and securities	145	6,133
Cash, cash equivalents, restricted cash and securities at beginning of period	587	224
Cash, cash equivalents, restricted cash and securities at end of period	732	6,357
Supplemental cash flow information:
Income taxes refunded (paid), net	292	(260)
Interest paid (net of capitalized interest of $28 and $41)	$ (1,061)	$ (624)