v3.7.0.1
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Cash Flows from Operating Activities    
Net income $ 3,553 $ 4,430
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization expense 4,059 4,017
Employee retirement benefits (111) 356
Deferred income taxes 2,025 167
Provision for uncollectible accounts 330 353
Equity in losses of unconsolidated businesses, net of dividends received 28 29
Changes in current assets and liabilities, net of effects from acquisition/disposition of businesses (4,694) (1,162)
Discretionary contributions to qualified pension plans (3,411)  
Other, net (98) (693)
Net cash provided by operating activities 1,681 7,497
Cash Flows from Investing Activities    
Capital expenditures (including capitalized software) (3,067) (3,387)
Acquisitions of businesses, net of cash acquired (1,746) (161)
Acquisitions of wireless licenses (196) (131)
Other, net 176 243
Net cash used in investing activities (4,833) (3,436)
Cash Flows from Financing Activities    
Proceeds from long-term borrowings 13,054  
Proceeds from asset-backed long-term borrowings 1,283  
Repayments of long-term borrowings and capital lease obligations (5,592) (376)
Decrease in short-term obligations, excluding current maturities (52) (40)
Dividends paid (2,354) (2,302)
Other, net (1,760) 33
Net cash provided by (used in) financing activities 4,579 (2,685)
Increase in cash and cash equivalents 1,427 1,376
Cash and cash equivalents, beginning of period 2,880 4,470
Cash and cash equivalents, end of period $ 4,307 $ 5,846