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Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Capital expenditures incurred but not yet paid   $ 4.7 $ 5.1
Purchases of shares of common stock to be settled $ 20.3