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Fair Value Measurements - Additional Information (Detail) (USD $)	3 Months Ended
	Jun. 30, 2013	Dec. 31, 2014	Dec. 31, 2013
Financial Instruments [Line Items]
Impairment charge	$ 14,000,000
Remaining fair value of intangible asset	99,000,000mat_RemainingFairValueOfIntangibleAsset
Estimated fair value of long-term debt, including the current portion		2,180,000,000us-gaap_LongTermDebtFairValue	1,620,000,000us-gaap_LongTermDebtFairValue
Long-term debt		$ 2,100,000,000us-gaap_LongTermDebt	$ 1,600,000,000us-gaap_LongTermDebt

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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