Business Acquisitions and Divestitures Business Acquisition Summary (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Dec. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Business Acquisition [Line Items]          
Proceeds from Divestiture of Businesses   $ 439 $ 2,478 $ 8,888  
Business Combination, Acquisition Related Costs [1]   8,225 8,901 16,211  
Gain (Loss) on Disposition of Business   (1,770) 1,370 [2] (14,547) [2]  
Operating Lease, Right-of-Use Asset   131,837 0    
Goodwill   2,356,085 2,322,928 2,433,784  
Dutch Linen Loan [Domain]          
Business Acquisition [Line Items]          
Interest Rate Period 4 years       15 years
HCS [Member]          
Business Acquisition [Line Items]          
Proceeds from Divestiture of Businesses       8,891  
Gain (Loss) on Disposition of Business       (12,972)  
Series of Individually Immaterial Business Acquisitions [Member]          
Business Acquisition [Line Items]          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents   8,811 [3] 0 235  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables   10,331 [3] 750 1,464  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory   8,999 [3] 51 2,289  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment   9,241 [3] 2,004 3,381  
Operating Lease, Right-of-Use Asset   4,462 [3] 0 0  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other   1,133 [3] 479 126  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill   36,500 [3] 4,070 17,404  
Goodwill   74,531 [3] 6,614 32,384  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets   154,008 [3] 13,968 57,283  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities   (20,659) [3] (146) (2,077)  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities   (4,000) [3] (509) (2,679)  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities   (24,659) [3] (655) (4,756)  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net   $ 129,349 [3] $ 13,313 $ 52,527  
[1] Acquisition and integration related charges include transaction costs and integration expenses associated with acquisitions.
[2] For more information regarding our recent acquisitions and divestitures see Note 18 titled, "Business Acquisitions and Divestitures". Amortization of purchased intangible assets fiscal 2019 total includes an impairment charge of $16,249, see Note 3 titled, "Goodwill and Intangible Assets", for more information.
[3]
(1) Purchase price allocation is still preliminary as of March 31, 2020, as valuations have not been finalized.