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Other Long-Term Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Apr. 01, 2019
Mar. 31, 2019
Other Liabilities Disclosure [Abstract]      
Deferred rent     $ 78,658
Postretirement benefit obligations $ 129,567   124,925
Other 132,111   71,816
Total other long-term liabilities $ 261,678 $ 196,742 $ 275,399