Restructuring - Narrative (Details) $ in Thousands	3 Months Ended								12 Months Ended		36 Months Ended	48 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($) store	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) store	Dec. 31, 2017 USD ($)	Dec. 31, 2018 store	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring expenses net	$ 2,500	$ 5,500	$ 18,700	$ 13,300	$ 600	$ 500	$ (900)	$ 900		$ 17,994
Facility Closing
Restructuring Cost and Reserve [Line Items]
Number of store closures | store											139
Restructuring expenses net										$ 0
2016 and 2017 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring expenses net									$ 1,600			$ 40,900
2019 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Number of store closures | store									155
Restructuring expenses net									$ 38,400
Canada | 2019 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Number of stores | store		6