Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 48.8	$ 101.9
Trade and other accounts receivable (less allowances of $4.3 million and $4.7 million respectively)	241.6	154.4
Inventories (less allowances of $9.7 million and $8.6 million respectively):
Finished goods	149.6	118.1
Raw materials	68.0	55.7
Total inventories	217.6	173.8
Prepaid expenses	5.0	6.2
Prepaid income taxes	6.9	4.8
Total current assets	519.9	441.1
Property, plant and equipment:
Gross cost	300.7	251.8
Less accumulated depreciation	(113.8)	(94.4)
Net property, plant and equipment	186.9	157.4
Goodwill	335.5	374.8
Other intangible assets	164.1	144.4
Deferred tax assets	15.5	14.9
Pension asset	52.6	48.0
Other non-current assets	2.4	0.8
Total assets	1,276.9	1,181.4
Current liabilities:
Accounts payable	108.0	59.6
Accrued liabilities	91.4	94.3
Current portion of long term debt	10.3	10.3
Current portion of finance leases	2.4	1.6
Current portion of plant closure provisions	6.1	6.7
Current portion of accrued income taxes	9.0	9.4
Current portion of acquisition-related contingent consideration	1.1	1.1
Current portion of deferred income	0.1	0.1
Total current liabilities	228.4	183.1
Long-term debt, net of current portion	238.8	258.5
Finance leases, net of current portion	3.4	2.9
Plant closure provisions, net of current portion	35.6	32.8
Unrecognized tax benefits	2.3	2.3
Deferred tax liabilities	47.3	32.3
Pension liabilities	15.7	14.2
Deferred income, net of current portion	0.5	0.5
Other non-current liabilities	0.5	1.0
Total liabilities	572.5	527.6
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	316.9	315.1
Treasury stock (5,417,857 and 5,483,341 shares at cost, respectively)	(97.1)	(97.5)
Retained earnings	595.9	561.8
Accumulated other comprehensive loss	(112.0)	(126.2)
Total Innospec stockholders' equity	704.0	653.5
Non-controlling interest	0.4	0.3
Total equity	704.4	653.8
Total liabilities and equity	$ 1,276.9	$ 1,181.4

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).