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Recent Accounting Pronouncements - Additional Information (Details) - ASU 2016-02 - Subsequent Event
$ in Millions
Feb. 01, 2019
USD ($)
Minimum  
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]  
Lease, right-of-use assets $ 80
Lease liabilities 80
Maximum  
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]  
Lease, right-of-use assets 100
Lease liabilities $ 100