Accounts Receivable and Notes Receivable and Credit Quality of Receivables - Components of Total Notes Receivable, Net (Details) - USD ($) $ in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Jan. 01, 2017
Notes receivable, net
Total accounts and notes receivable, net	$ 753.3		$ 737.2
Notes Receivable
Notes receivable, net
Notes receivable	178.6		217.1
Notes receivable allowance for doubtful accounts	(24.4)	$ (20.8)	(20.8)	$ (15.0)
Total accounts and notes receivable, net	154.2		196.3
Domestic | Notes Receivable
Notes receivable, net
Notes receivable	55.1		93.5
Notes receivable allowance for doubtful accounts	(6.5)		(4.0)
International | Notes Receivable
Notes receivable, net
Notes receivable	123.5		123.6
Notes receivable allowance for doubtful accounts	(17.9)		(16.8)
Balances over 90 days past due | Notes Receivable
Balances over 90 days past due
Notes receivable, balances over 90 days past due	31.0		42.4
Notes receivable allowance for doubtful accounts, balances over 90 days past due	(24.4)		(20.8)
Notes receivable, net, balances over 90 days past due	6.6		21.6
Balances over 90 days past due | Domestic | Notes Receivable
Balances over 90 days past due
Notes receivable, balances over 90 days past due	6.2		9.2
Notes receivable allowance for doubtful accounts, balances over 90 days past due	(6.5)		(4.0)
Balances over 90 days past due | International | Notes Receivable
Balances over 90 days past due
Notes receivable, balances over 90 days past due	24.8		33.2
Notes receivable allowance for doubtful accounts, balances over 90 days past due	$ (17.9)		$ (16.8)