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Lease Commitments - Sale-Leaseback Transactions (Details) - Sale-leaseback of four distribution centers
$ in Millions
Jan. 10, 2018
USD ($)
property
Capital Leased Assets [Line Items]  
Number of properties in sale-leaseback arrangement | property 4
Sale-leaseback gross proceeds $ 110.0
Capital lease obligations 95.1
Sale leaseback transaction, deferred gain, gross $ 83.9