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Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Apr. 27, 2015
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2018
Derivative Instruments And Hedging Activities Disclosures [Line Items]        
Unrealized loss on derivative instruments   $ (7,100,000) $ (46,400,000)  
Ineffective portion of change in fair value derivatives   0 0  
Scenario, Forecast        
Derivative Instruments And Hedging Activities Disclosures [Line Items]        
Increase decrease in estimated interest expense       $ 28,400,000
Interest Expense        
Derivative Instruments And Hedging Activities Disclosures [Line Items]        
Reclassification of other comprehensive income   $ 11,600,000 $ 5,900,000  
Interest Rate Swap        
Derivative Instruments And Hedging Activities Disclosures [Line Items]        
Derivative, notional value $ 2,120,000,000      
Derivative, maturity date Oct. 24, 2022      
Derivative, weighted average fixed rate paid 2.105%      
Interest Rate Swap | Minimum        
Derivative Instruments And Hedging Activities Disclosures [Line Items]        
LIBOR, variable rate 1.00%