v3.10.0.1

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - Allowance for doubtful accounts — Trade receivables (Continuing operations) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at beginning of period | $ 74.2 | $ 56.1 | $ 60.8
Impact of the adoption of ASU 2014-09 | 11.9 | 0.0 | 0.0
Additions to costs and expenses | 61.6 | 51.6 | 50.9
Acquisitions | 0.0 | 1.5 | 3.8
VodafoneZiggo JV Transaction | 0.0 | 0.0 | (13.0)
Deductions or write-offs | (98.4) | (41.7) | (39.3)
Foreign currency translation adjustments | (3.5) | 6.7 | (7.1)
Balance at end of period | $ 45.8 | $ 74.2 | $ 56.1

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