Related Party Transactions (Tables)

6 Months Ended

Jun. 26, 2021

Related Party Transactions [Abstract]

Schedule of related party transactions

	For the Three Months Ended June 26, 2021						For the Three Months Ended June 27, 2020
(in millions)	Powersem		EB Tech		ATEC		Powersem		EB Tech		ATEC
Sales to related party	$	—	$	—	$	—	$	0.3	$	—	$	—
Purchase material/service from related party	0.7		0.1		2.8		0.8		—		1.6
	For the Six Months Ended June 26, 2021						For the Six Months Ended June 27, 2020
(in millions)	Powersem		EB Tech		ATEC		Powersem		EB Tech		ATEC
Sales to related party	$	0.2	$	—	$	—	$	0.7	$	—	$	—
Purchase material/service from related party	1.8		0.2		5.8		1.0		—		3.4
	June 26, 2021						December 26, 2020
(in millions)	Powersem		EB Tech		ATEC		Powersem		EB Tech		ATEC
Accounts receivable balance	$	—	$	—	$	—	$	0.1	$	—	$	—
Accounts payable balance	0.1		—		1.8		0.1		—		0.2