Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 110.3	$ 123.1
Trade and other accounts receivable (less allowances of $6.5 million and $2.9 million respectively)	296.5	279.7
Inventories (less allowances of $15.0 million and $13.6 million respectively):
Finished goods	175.1	180.2
Raw materials	76.3	67.8
Total inventories	251.4	248.0
Prepaid expenses	8.9	11.6
Prepaid income taxes	6.0	1.5
Other current assets	0.2	0.0
Total current assets	673.3	663.9
Net property, plant and equipment	195.0	196.4
Goodwill	360.5	364.9
Operating lease right-of-use assets	33.8	0.0
Other intangible assets	118.4	136.3
Deferred tax assets	8.3	8.8
Pension asset	100.7	95.9
Other non-current assets	4.4	7.2
Total assets	1,494.4	1,473.4
Current liabilities:
Accounts payable	106.1	126.8
Accrued liabilities	159.5	132.1
Current portion of long-term debt	0.0	21.4
Current portion of finance leases	1.2	1.8
Current portion of plant closure provisions	3.9	5.9
Current portion of accrued income taxes	15.0	8.6
Current portion of operating lease liabilities	11.0	0.0
Total current liabilities	296.7	296.6
Long-term debt, net of current portion	131.2	186.2
Finance leases, net of current portion	0.6	1.5
Plant closure provisions, net of current portion	45.3	43.6
Accrued income taxes, net of current portion	36.2	40.0
Unrecognized tax benefits, net of current portion	14.9	14.0
Operating lease liabilities, net of current portion	22.8	0.0
Deferred tax liabilities	47.2	48.2
Pension liabilities and post-employment benefits	15.4	15.7
Other non-current liabilities	1.9	2.1
Total liabilities	612.2	647.9
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	329.4	324.9
Treasury stock (5,058,972 and 5,120,799 shares at cost, respectively)	(93.3)	(92.8)
Retained earnings	737.2	668.3
Accumulated other comprehensive loss	(91.8)	(75.7)
Total Innospec stockholders' equity	881.8	825.0
Non-controlling interest	0.4	0.5
Total equity	882.2	825.5
Total liabilities and equity	$ 1,494.4	$ 1,473.4

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).