XML 96 R58.htm IDEA: XBRL DOCUMENT v2.4.0.8

Long-Term Debt (Parenthetical) (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
2010 Senior Notes due October 2020
Debt Instrument [Line Items]
Debt instrument maturity date, month and year	2020-10	2020-10	2020-10
2010 Senior Notes due October 2040
Debt Instrument [Line Items]
Debt instrument maturity date, month and year	2040-10	2040-10	2040-10
2011 Senior Notes due November 2016
Debt Instrument [Line Items]
Debt instrument maturity date, month and year	2016-11	2016-11	2016-11
2011 Senior Notes due November 2041
Debt Instrument [Line Items]
Debt instrument maturity date, month and year	2041-11	2041-11	2041-11
2013 Senior Notes due March 2018
Debt Instrument [Line Items]
Debt instrument maturity date, month and year	2018-03	2018-03	2018-03
2013 Senior Notes due March 2023
Debt Instrument [Line Items]
Debt instrument maturity date, month and year	2023-03	2023-03	2023-03

X

- Definition

Date when the debt instrument is scheduled to be fully repaid, in month-year format.

+ References

No definition available.

+ Details

Name:	mat_DebtInstrumentsMaturityDateMonthAndYear
Namespace Prefix:	mat_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration