Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities
Net Income	$ 17,881	$ 13,630
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	12,155	12,523
Employee retirement benefits	(1,928)	867
Deferred income taxes	2,970	530
Provision for expected credit losses	604	1,100
Equity in losses of unconsolidated businesses, net of dividends received	32	67
Changes in current assets and liabilities, net of effects from acquisition/disposition of businesses	603	1,345
Other, net	(1,155)	2,410
Net cash provided by operating activities	31,162	32,472
Cash Flows from Investing Activities
Capital expenditures (including capitalized software)	(13,861)	(14,168)
Acquisitions of businesses, net of cash acquired	(459)	(507)
Acquisitions of wireless licenses	(47,027)	(3,757)
Proceeds from disposition of business	4,122	0
Other, net	207	(37)
Net cash used in investing activities	(57,018)	(18,469)
Cash Flows from Financing Activities
Proceeds from long-term borrowings	32,482	12,387
Proceeds from asset-backed long-term borrowings	2,695	4,439
Repayments of long-term borrowings and finance lease obligations	(7,904)	(8,853)
Repayments of asset-backed long-term borrowings	(3,887)	(6,726)
Dividends paid	(7,797)	(7,636)
Other, net	(2,120)	(1,348)
Net cash provided by (used in) financing activities	13,469	(7,737)
Increase (decrease) in cash, cash equivalents and restricted cash	(12,387)	6,266
Cash, cash equivalents and restricted cash, beginning of period	23,498	3,917
Cash, Cash equivalents and restricted cash, end of period (Note 1)	$ 11,111	$ 10,183