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Income Taxes - Factors Effecting Effective Tax Rate from U.S. Federal Statutory Rate (Detail)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]      
Statutory rate 35.00% 35.00% 35.00%
Foreign income inclusions 6.10% 48.90% 20.50%
Impairment of Octane Additives segment goodwill 0.50% 0.50% 1.30%
Foreign tax credits (1.90%) (38.30%) (25.80%)
Pension (credit)/charge (0.30%) (0.30%) (9.70%)
Foreign tax rate differential (14.60%) (16.40%) (19.10%)
Permanent tax adjustments (2.50%) (0.20%) 0.30%
Amortization 1.10% 0.50% 0.70%
Tax (credit)/charge from previous years (2.90%) (0.60%) (1.90%)
Net charge/(credit) from unrecognized tax benefits 0.20% 0.30% 7.70%
Other items and adjustments, net (5.40%) (0.50%) 2.00%
Effective Income Tax Rate 16.20% 28.30% 6.20%
United Kingdom [Member]
      
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]      
Foreign tax rate differential 0.90% (0.60%) (4.80%)