Supplemental Information (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Prepaid and other current assets
Tax related items	$ 17.7	$ 15.7
Argentina government receivable	13.3	10.8
Prepaid expenses	12.2	8.2
Other receivables	2.3	8.6
Derivative assets (Note 15)	0.2	0.0
Bank Acceptance Drafts	0.0	0.2
Other current assets	9.6	12.8
Total	55.3	56.3	[1]
Other assets
Argentina government receivable	55.8	55.8
Advance to contract manufacturers	16.0	16.3
Long-term raw materials inventory	4.9	0.0
Capitalized software, net	1.5	1.8
Tax related items	1.3	2.7
Other long-term assets	11.4	11.8
Total	90.9	88.4	[1]
Accrued and other current liabilities
Accrued payroll	17.1	12.5
Accrued investment in unconsolidated affiliate	6.2	0.0
Restructuring reserves	3.2	3.2
Retirement liability - 401K	2.5	2.6
Environmental reserves, current	0.5	0.6
Severance	0.0	2.5
Other accrued and other current liabilities	32.3	15.3
Total	61.8	36.7	[1]
Other long-term liabilities
Deferred compensation plan obligation	5.9	4.5
Contingencies related to uncertain tax positions	2.3	3.4
Self insurance reserves	1.5	1.5
Asset retirement obligations	0.3	0.3
Accrued investment in unconsolidated affiliate	0.0	6.2
Other long-term liabilities	1.7	1.3
Total	11.7	17.2	[1]
TMA Agreement, Uncertain Tax Positions
Other long-term liabilities
Contingencies related to uncertain tax positions	1.9
TMA Agreement, Indemnification Liability
Other long-term liabilities
Contingencies related to uncertain tax positions	0.4
Nikolov V. Livent Corp | Pending Litigation
Other assets
Insurance reimbursement receivable	5.4
Other long-term liabilities
Settlement accrued liability	7.4
Argentina Government
Other assets
Export tax and export rebate receivables	$ 38.4	$ 39.5

[1] As adjusted for the adoption of ASU 2020-06 using the full retrospective method.