Basis of Presentation (Details) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2020 USD ($) $ / shares	Sep. 28, 2019 USD ($) $ / shares	Oct. 03, 2020 USD ($) borrowingGroup $ / shares	Sep. 28, 2019 USD ($) $ / shares
Number of borrowing groups | borrowingGroup			2
Cumulative catch-up method
Cumulative catch up adjustments	$ 22.0	$ 21.0	$ 41.0	$ 79.0
Change in accounting estimate financial effect, increase in net income or decrease in net loss	$ 17.0	$ 16.0	$ 31.0	$ 60.0
Change in accounting estimate financial effect increase in earnings per share diluted or decrease in earnings per share diluted | $ / shares	$ 0.07	$ 0.07	$ 0.14	$ 0.26
Gross favorable adjustments	$ 31.0	$ 41.0	$ 104.0	$ 140.0
Gross unfavorable adjustments	$ 9.0	$ (20.0)	$ 63.0	$ (61.0)