Repositioning Costs and Net Loss on Dispositions and Repositioning Liabilities (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Repositioning costs and net loss on dispositions	$ 277,900,000	$ 0	$ 277,900,000	$ 0
Incremental severance costs	150,000,000.0
Real estate operating lease ROU asset and other asset impairment charges	55,800,000
Other real estate exit costs	47,000,000.0
Dispositions and other repositioning charges	25,100,000
Q3 2018 Respositioning Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Repositioning Liabilities	$ 13,800,000		$ 13,800,000		$ 25,100,000