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v3.19.3.a.u2

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
ASSETS |  |
Accounts receivable, allowance for doubtful accounts | $ 12.4 | $ 11.5
Intangible assets, accumulated amortization | $ 1,687.5 | $ 1,735.1
Limited partners: |  |
Common units outstanding (in units) | 2,189,226,130 | 2,184,869,029

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