Deferred Revenue And Remaining Performance Obligations (Tables)

9 Months Ended

Oct. 01, 2021

Revenue Recognition and Deferred Revenue [Abstract]

Deferred Revenue And Performance Obligations

Changes to our deferred revenue during the third quarter and first three quarters of 2021 and 2020 were as follows: 

	Third Quarter of				First Three Quarters of
(In millions)	2021		2020		2021		2020
Beginning balance of the period	$	606.1	$	531.0	$	613.8	$	541.9
Revenue recognized	(92.3)		(87.6)		(471.8)		(419.5)
Net deferred revenue activity	75.2		58.2		447.0		379.2
Ending balance of the period	$	589.0	$	501.6	$	589.0	$	501.6