Receivables - Finance and Contract Receivables Allowance for Credit Losses Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Allowances for credit losses:
Beginning of period			$ 67.5
Finance Receivables
Allowances for credit losses:
Beginning of period	$ 69.2	$ 61.0	61.9	$ 61.4
Impact of adopting ASU No. 2016-13	0.0		5.2
Provision for credit losses	15.1	11.9	31.4	24.4
Charge-offs	(14.2)	(13.9)	(30.1)	(28.9)
Recoveries	2.2	2.0	4.2	4.0
Currency translation	0.2	(0.1)	(0.1)	0.0
End of period	72.5	60.9	72.5	60.9
Contract Receivables
Allowances for credit losses:
Beginning of period	8.6	4.7	5.6	4.3
Impact of adopting ASU No. 2016-13	0.0		2.9
Provision for credit losses	1.2	1.2	2.6	2.1
Charge-offs	(0.9)	(1.0)	(2.2)	(1.7)
Recoveries	0.2	0.2	0.2	0.3
Currency translation	0.0	(0.1)	0.0	0.0
End of period	$ 9.1	$ 5.0	$ 9.1	$ 5.0