Contingencies and Commitments - Additional Information - 1 (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2009
Loss Contingencies [Line Items]
Number of cleanup locations	More than 100
Remediation reserve balance	$ 538,000,000	$ 543,000,000
Remediation reserve balance, classified as a current liability	66,000,000	70,000,000
Payments related to remediation expenses applied against the reserve	6,000,000
Increase (Decrease) in reserves due to effects of foreign currency translation	7,000,000
Actual remediation fieldwork period	4 years
Minimum [Member]
Loss Contingencies [Line Items]
Planning and design phase period	2 years
Majority of the project funding period	2016
Maximum [Member]
Loss Contingencies [Line Items]
Planning and design phase period	3 years
Majority of the project funding period	2020
Recurring Costs of Managing Hazardous Substances and Environmental Programs [Member]
Loss Contingencies [Line Items]
Percentage of cost of goods sold	2.00%
Massena West, NY [Member]
Loss Contingencies [Line Items]
Remediation reserve balance	238,000,000	239,000,000
Grasse River [Member]
Loss Contingencies [Line Items]
Increase in remediation reserve	8,000,000
Sherwin, TX site [Member]
Loss Contingencies [Line Items]
Remediation reserve balance	32,000,000	32,000,000
Guarantees, expiration date	Through 2019
Portovesme [Member]
Loss Contingencies [Line Items]
Increase in remediation reserve		3,000,000	3,000,000
Remediation reserve adjustment	7,000,000
Other Sites [Member]
Loss Contingencies [Line Items]
Remediation reserve adjustment	1,000,000
East St. Louis, IL Site [Member]
Loss Contingencies [Line Items]
Remediation reserve balance	$ 15,000,000	$ 15,000,000