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Balance Sheet Account Details Marketable Securities (Details) - USD ($) $ in Millions	Apr. 02, 2023	Jan. 01, 2023
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 77.0	$ 73.8
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(0.4)	(0.7)
Marketable securities	42.8	52.1
Marketable securities	33.8	21.0
Total marketable securities	76.6	73.1
Short-term Investments
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	43.0	52.6
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(0.2)	(0.5)
Marketable securities	42.8	52.1
Short-term Investments | Corporate bonds
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	33.4	40.5
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(0.2)	(0.5)
Marketable securities	33.2	40.0
Short-term Investments | Corporate asset-backed securities
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	6.1	6.7
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0.0	0.0
Marketable securities	6.1	6.7
Short-term Investments | U.S. government securities
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	0.0	2.0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0.0	0.0
Marketable securities	0.0	2.0
Short-term Investments | Agency bonds
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	1.0	1.0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0.0	0.0
Marketable securities	1.0	1.0
Short-term Investments | Sovereign government bonds
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	2.0	1.9
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0.0	0.0
Marketable securities	2.0	1.9
Short-term Investments | Foreign and other
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	0.5	0.5
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0.0	0.0
Marketable securities	0.5	0.5
Long-Term Investments | Corporate bonds
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	23.6	13.3
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0.0	(0.1)
Marketable securities	23.6	13.2
Long-Term Investments | Corporate asset-backed securities
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	8.8	7.9
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(0.1)	(0.1)
Marketable securities	8.7	7.8
Long-Term Investments | Agency bonds
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	1.6	0.0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(0.1)	0.0
Marketable securities	$ 1.5	$ 0.0

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- Definition

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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