Fair Value Measurements - Available-for-sale Securities (Details) - USD ($) $ in Millions	Jul. 01, 2022	Dec. 31, 2021
Other assets: | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment maturity	1 year
Other assets: | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment maturity	5 years
Demand and time deposits | Cash and cash equivalents:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	$ 19.0	$ 19.5
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	19.0	19.5
Demand and time deposits | Cash and cash equivalents: | Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	19.0	19.5
Demand and time deposits | Cash and cash equivalents: | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
Demand and time deposits | Cash and cash equivalents: | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
Money market funds | Cash and cash equivalents:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	1.0	0.7
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	1.0	0.7
Money market funds | Cash and cash equivalents: | Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	1.0	0.7
Money market funds | Cash and cash equivalents: | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
Money market funds | Cash and cash equivalents: | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
Corporate bonds | Cash and cash equivalents:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost		1.6
Unrealized gains		0.0
Unrealized losses		0.0
Fair value		1.6
Corporate bonds | Cash and cash equivalents: | Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value		0.0
Corporate bonds | Cash and cash equivalents: | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value		1.6
Corporate bonds | Cash and cash equivalents: | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value		0.0
Corporate bonds | Other current assets:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	21.1	16.0
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	21.1	16.0
Corporate bonds | Other current assets: | Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
Corporate bonds | Other current assets: | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	21.1	16.0
Corporate bonds | Other current assets: | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
Corporate bonds | Other assets:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	11.0	19.7
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	11.0	19.7
Corporate bonds | Other assets: | Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
Corporate bonds | Other assets: | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	11.0	19.7
Corporate bonds | Other assets: | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
Certificate of deposit | Other current assets:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	4.7	1.9
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	4.7	1.9
Certificate of deposit | Other current assets: | Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
Certificate of deposit | Other current assets: | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	4.7	1.9
Certificate of deposit | Other current assets: | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
Commercial paper | Cash and cash equivalents:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost		2.0
Unrealized gains		0.0
Unrealized losses		0.0
Fair value		2.0
Commercial paper | Cash and cash equivalents: | Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value		0.0
Commercial paper | Cash and cash equivalents: | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value		2.0
Commercial paper | Cash and cash equivalents: | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value		0.0
Commercial paper | Other current assets:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	7.4	5.0
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	7.4	5.0
Commercial paper | Other current assets: | Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	2.5	3.0
Commercial paper | Other current assets: | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	4.9	2.0
Commercial paper | Other current assets: | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
US Treasury bonds | Other current assets:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	1.6	0.4
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	1.6	0.4
US Treasury bonds | Other current assets: | Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
US Treasury bonds | Other current assets: | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	1.6	0.4
US Treasury bonds | Other current assets: | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
US Treasury bonds | Other assets:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	0.4	1.6
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	0.4	1.6
US Treasury bonds | Other assets: | Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	0.0
US Treasury bonds | Other assets: | Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.4	1.6
US Treasury bonds | Other assets: | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 0.0	$ 0.0