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Supplementary Data Valuation and Qualifying Accounts - Allowance for Uncollectible Accounts (Tables) | 12 Months Ended
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Dec. 31, 2019
Valuation and Qualifying Accounts - Allowance for Uncollectible Accounts [Abstract] |
Valuation and Qualifying Accounts - Allowance for Uncollectible Accounts Receivable | Valuation and Qualifying Accounts – Allowance for Uncollectible Accounts Receivable
| Years ended December 31,
| 2019 |  | 2018 |  | 2017
Balance at beginning of period | $ | 42.5 |  |  | $ | 42.7 |  |  | $ | 55.7 |
Charges to costs and expenses | 10.1 |  |  | 6.5 |  |  | 9.5 |
Adjustments: |  |  |  |  |
Acquisitions/(dispositions) | (0.3 | ) |  | 2.2 |  |  | (1.0 | )
Uncollectible accounts written off | (11.9 | ) |  | (7.1 | ) |  | (25.5 | )
Foreign currency translation adjustments | (0.2 | ) |  | (1.8 | ) |  | 4.0 |
Balance at end of period | $ | 40.2 |  |  | $ | 42.5 |  |  | $ | 42.7 |

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- Definition Valuation and Qualifying Accounts - Allowance for Uncollectible Accounts [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
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