Receivables - Summary of Effects of ASU 2016-13 Adoption (Details) - USD ($) $ in Millions	Sep. 26, 2020	Jun. 27, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Dec. 29, 2018
Current assets:
Allowance for credit losses, current	$ (26.1)		$ (21.2)
Long-term assets
Allowance for credit loss, noncurrent	(57.9)		(46.3)
Total allowances for credit losses			(67.5)
Deferred income tax assets	47.3		52.3
Equity
Retained earnings	5,014.9		4,779.7
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13
Long-term assets
Total allowances for credit losses			(8.1)
Deferred income tax assets			2.0
Equity
Retained earnings			(6.1)
Cumulative Effect, Period of Adoption, Adjusted Balance
Long-term assets
Total allowances for credit losses			(75.6)
Deferred income tax assets			54.3
Equity
Retained earnings			4,773.6
Finance Receivables
Current assets:
Allowance for credit losses, current	(23.8)		(19.7)
Long-term assets
Allowance for credit loss, noncurrent	(51.2)		(42.2)
Total allowances for credit losses	(75.0)	$ (72.5)	(61.9)	$ (61.1)	$ (60.9)	$ (61.4)
Finance Receivables | Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13
Current assets:
Allowance for credit losses, current			(1.7)
Long-term assets
Allowance for credit loss, noncurrent			(3.5)
Finance Receivables | Cumulative Effect, Period of Adoption, Adjusted Balance
Current assets:
Allowance for credit losses, current			(21.4)
Long-term assets
Allowance for credit loss, noncurrent			(45.7)
Contract Receivables
Current assets:
Allowance for credit losses, current	(2.3)		(1.5)
Long-term assets
Allowance for credit loss, noncurrent	(6.7)		(4.1)
Total allowances for credit losses	$ (9.0)	$ (9.1)	(5.6)	$ (6.0)	$ (5.0)	$ (4.3)
Contract Receivables | Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13
Current assets:
Allowance for credit losses, current			(0.5)
Long-term assets
Allowance for credit loss, noncurrent			(2.4)
Contract Receivables | Cumulative Effect, Period of Adoption, Adjusted Balance
Current assets:
Allowance for credit losses, current			(2.0)
Long-term assets
Allowance for credit loss, noncurrent			$ (6.5)