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Supplemental Financial Statement Information
 12 Months Ended
Dec. 31, 2023
Additional Financial Information Disclosure [Abstract]  
Supplemental Financial Statement Information Supplemental Financial Statement Information
Cash and cash equivalents at December 31, 2023 and January 1, 2023 were as follows:
Fiscal Year
(In millions)20232022
Cash$329.8 $164.9 
Other short-term investments414.1 419.1 
Total cash and cash equivalents$743.9 $584.0 
Other current liabilities included salaries, wages and other employee-related liabilities of $102.3 million and $100.8 million at December 31, 2023 and January 1, 2023, respectively, and accrued interest of $23.7 million and $11.8 million at December 31, 2023 and January 1, 2023, respectively.

Other income (expense) for the fiscal years ended December 31, 2023, January 1, 2023, and January 2, 2022 was as follows:
Fiscal Year
(in millions)202320222021
Rent, royalty income and other income$2.6 $2.3 $1.1 
Gains from disposal of property, plant and equipment, net0.3 0.2 2.9 
Net equity income (loss) on joint ventures (See Note 7)(1.6)12.6 0.1 
Gain on sales of businesses, net (See Note 6)— — 13.8 
Joint venture restructuring credit (charge) (See Note 7)— 0.9 — 
Litigation settlement (See Note 21)— (28.5)— 
Other— — 0.3 
Total other income (expense), net$1.3 $(12.5)$18.2 
Supplier Financing
The Company participates in supplier financing programs with two financial institutions to offer its suppliers the option for access to payment in advance of an invoice due date. Under such programs, these financial institutions provide early payment to suppliers at their request for invoices that ATI has confirmed as valid at a pre-determined discount rate commensurate with the creditworthiness of ATI. As of December 31, 2023 and January 1, 2023, the Company had $15.6 million and $23.7 million, respectively, reported in accounts payable on the consolidated balance sheets under such programs.