EARNINGS PER SHARE ATTRIBUTABLE TO MONSTER WORLDWIDE, INC. - Reconciliation of Shares Used in Calculating Basic and Diluted Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Oct. 22, 2014
Earnings Per Share [Abstract]
Beginning balance			$ 9,245
Basic weighted-average shares outstanding (in shares)	90,340	86,576	89,853	88,236
Impact of stock options and non-vested stock under employee compensation plans (in shares)	627	0	1,006	0
Impact of 3.50% convertible senior notes due 2019 (in shares)	5,872	0	3,714	0
Diluted weighted-average shares outstanding (in shares)	96,839	86,576	94,573	88,236
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average anti-dilutive common stock equivalents - stock options and non-vested stock under employee compensation plans (in shares)	259	7,602	777	7,460
Stock Compensation Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average anti-dilutive common stock equivalents - stock options and non-vested stock under employee compensation plans (in shares)		2,741		2,999
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average anti-dilutive common stock equivalents - stock options and non-vested stock under employee compensation plans (in shares)		4,861		4,461
3.50% Convertible Senior Notes Due 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Interest rate	3.50%		3.50%		3.50%	3.50%
Convertible Debt | 3.50% Convertible Senior Notes Due 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Interest rate	3.50%	3.50%	3.50%	3.50%		3.50%