Pension Plans - Net Periodic Pension Cost (Detail) - Pension Plan - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Net periodic benefit cost:
Service cost	$ 28.8	$ 27.0	$ 23.5
Interest cost	42.3	48.7	56.4
Expected return on plan assets	(94.4)	(94.7)	(91.5)
Amortization of unrecognized loss	36.3	34.5	25.2
Amortization of prior service cost (credit)	0.1	0.0	(0.9)
Net periodic benefit cost	13.1	15.5	12.7
Changes in benefit obligations recognized in OCI, net of tax:
Net (gain) loss	(92.8)	(31.6)	31.9
Prior service cost (credit)	(0.1)	0.1	0.4
Total recognized in OCI	$ (92.9)	$ (31.5)	$ 32.3