Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 105.3	$ 75.7
Trade and other accounts receivable (less allowances of $4.5 million and $3.8 million, respectively)	221.4	292.0
Inventories (less allowances of $19.4 million and $14.5 million, respectively):
Finished goods	156.3	173.9
Raw materials	63.7	70.7
Total inventories	220.0	244.6
Prepaid expenses	14.9	14.7
Prepaid income taxes	4.2	2.5
Other current assets	0.4	0.8
Total current assets	566.2	630.3
Net property, plant and equipment	210.8	198.7
Operating lease right-of-use assets	40.1	32.4
Goodwill	371.2	363.0
Other intangible assets	75.3	113.5
Deferred tax assets	7.6	9.1
Pension asset	118.0	115.9
Other non-current assets	8.2	5.9
Total assets	1,397.4	1,468.8
Current liabilities:
Accounts payable	98.7	122.0
Accrued liabilities	129.8	154.0
Current portion of finance leases	0.5	1.0
Current portion of plant closure provisions	6.6	5.6
Current portion of accrued income taxes	5.5	10.3
Current portion of operating lease liabilities	11.3	10.6
Total current liabilities	252.4	303.5
Long-term debt, net of current portion	0.0	58.6
Finance leases, net of current portion	0.1	0.5
Operating lease liabilities, net of current portion	28.9	21.9
Plant closure provisions, net of current portion	51.9	43.7
Accrued income taxes, net of current portion	32.4	36.2
Unrecognized tax benefits, net of current portion	16.0	16.4
Deferred tax liabilities	46.9	49.6
Pension liabilities and post-employment benefits	20.5	17.8
Other non-current liabilities	3.4	1.7
Equity:
Common stock, $0.01 par value, authorized 40,000,000 shares, issued 29,554,500 shares	0.3	0.3
Additional paid-in capital	336.1	330.4
Treasury stock (4,958,599 and 5,047,278 shares at cost, respectively)	(93.3)	(93.3)
Retained earnings	758.6	755.5
Accumulated other comprehensive loss	(57.3)	(74.4)
Total Innospec stockholders' equity	944.4	918.5
Non-controlling interest	0.5	0.4
Total equity	944.9	918.9
Total liabilities and equity	$ 1,397.4	$ 1,468.8

Prepaid Expense Current Excluding Tax

No definition available.

Name:	iosp_PrepaidExpenseCurrentExcludingTax
Namespace Prefix:	iosp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).