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Special Charges (Notes)	3 Months Ended
Special Charges (Notes)	Jun. 30, 2016
Other Nonrecurring (Income) Expense [Abstract]
Special charges	Special Charges The Company incurred special charges related to severance, office closing and other costs associated with its acquisition activity of $22.0 million for the three months ended June 30, 2016 (of which $17.0 million was paid during the quarter) and $1.6 million for the three months ended June 30, 2015.