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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
shares in Millions, $ in Millions
Sep. 30, 2017
Apr. 01, 2017
Allowance on accounts receivable $ 248.8 $ 214.4
Class A common stock, par value $.01 per share; 102.0 million and 101.5 million shares issued; 55.4 million and 55.1 million shares outstanding    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares issued 102.0 101.5
Common stock, shares outstanding 55.4 55.1
Treasury stock, shares 46.6 46.4
Class B common stock, par value $.01 per share; 25.9 million shares issued and outstanding    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares issued 25.9 25.9
Common stock, shares outstanding 25.9 25.9