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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014
Cash flows from operating activities: |  |
Net income | $ 553 | $ 392
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 230 | 235
Provision for doubtful accounts | 232 | 224
Deferred income tax provision (benefit) | 138 | (21)
Stock-based compensation expense | 39 | 38
Excess tax benefits from stock-based compensation arrangements | (4) | 0
Gain on contribution of business to joint venture | (334) | 0
Other, net | (4) | (5)
Changes in operating assets and liabilities: |  |
Accounts receivable | (214) | (260)
Accounts payable and accrued expenses | (41) | 20
Income taxes payable | (15) | 22
Other assets and liabilities, net | (41) | (10)
Net cash provided by operating activities | 539 | 635
Cash flows from investing activities: |  |
Business acquisitions, net of cash acquired | (41) | (725)
Capital expenditures | (169) | (219)
Investment in equity method investee | (37) | 0
Decrease in investments and other assets | 10 | 10
Net cash used in investing activities | (237) | (934)
Cash flows from financing activities: |  |
Proceeds from borrowings | 2,214 | 1,953
Repayments of debt | (2,235) | (1,466)
Purchases of treasury stock | (174) | (82)
Exercise of stock options | 58 | 55
Excess tax benefits from stock-based compensation arrangements | 4 | 0
Dividends paid | (158) | (139)
Distributions to noncontrolling interests | (28) | (23)
Sale of noncontrolling interest in subsidiary | 51 | 0
Payment of deferred business acquisition consideration | (51) | 0
Other financing activities, net | (52) | (16)
Net cash (used in) provided by financing activities | (371) | 282
Net change in cash and cash equivalents | (69) | (17)
Cash and cash equivalents, beginning of period | 192 | 187
Cash and cash equivalents, end of period | $ 123 | $ 170

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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4569616-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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