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SUPPLEMENTAL CASH FLOW & OTHER DATA (Tables) | 12 Months Ended
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Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract] |
Supplemental Cash Flow and Other Data | Supplemental cash flow and other data for the years ended December 31, 2018, 2017 and 2016 was as follows:
| 2018 |  | 2017 |  | 2016
Depreciation expense | $ | 219 |  |  | $ | 196 |  |  | $ | 177 |
Amortization expense | 90 |  |  | 74 |  |  | 72 |
Depreciation and amortization expense | $ | 309 |  |  | $ | 270 |  |  | $ | 249 |
Interest expense | $ | (169 | ) |  | $ | (153 | ) |  | $ | (144 | )
Interest income | 2 |  |  | 2 |  |  | 1 |
Interest expense, net | $ | (167 | ) |  | $ | (151 | ) |  | $ | (143 | )
Interest paid | $ | 174 |  |  | $ | 159 |  |  | $ | 148 |
Income taxes paid | $ | 84 |  |  | $ | 243 |  |  | $ | 361 |
Assets acquired under capital leases | $ | 1 |  |  | $ | 7 |  |  | $ | — |
Accounts payable associated with capital expenditures | $ | 11 |  |  | $ | 26 |  |  | $ | 9 |
Accounts payable associated with purchases of treasury stock | $ | 3 |  |  | $ | — |  |  | $ | — |
Dividends payable | $ | 71 |  |  | $ | 61 |  |  | $ | 62 |
Businesses acquired: |  |  |  |  |  |  |
Fair value of assets acquired | $ | 453 |  |  | $ | 657 |  |  | $ | 139 |
Fair value of liabilities assumed | 7 |  |  | 58 |  |  | — |
Fair value of net assets acquired | 446 |  |  | 599 |  |  | 139 |
Merger consideration paid (payable), net | (19 | ) |  | (6 | ) |  | — |
Cash paid for business acquisitions | 427 |  |  | 593 |  |  | 139 |
Less: Cash acquired | 6 |  |  | 12 |  |  | — |
Business acquisitions, net of cash acquired | $ | 421 |  |  | $ | 581 |  |  | $ | 139 |

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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- References No definition available. + Details
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