BENEFIT PLANS	12 Months Ended
Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
BENEFIT PLANS	BENEFIT PLANS IAC has a retirement savings plan in the United States that qualifies under Section 401(k) of the Internal Revenue Code. Participating employees may contribute up to 50% of their pre-tax earnings, but not more than statutory limits. IAC contributes fifty cents for each dollar a participant contributes in this plan, with a maximum contribution of 3% of a participant's eligible earnings. Matching contributions for the plan for the years ended December 31, 2015, 2014 and 2013 are $9.1 million, $7.5 million and $6.5 million, respectively. Matching contributions are invested in the same manner as each participant's voluntary contributions in the investment options provided under the plan. An investment option in the plan is IAC common stock, but neither participant nor matching contributions are required to be invested in IAC common stock. The increase in matching contributions in 2015 is due primarily to an increase in participation in the plan due to increased headcount and recent acquisitions. IAC also has or participates in various benefit plans, principally defined contribution plans, for its international employees. IAC's contributions for these plans for the years ended December 31, 2015, 2014 and 2013 are $2.5 million, $2.5 million and $2.6 million, respectively.

BENEFIT PLANS

IAC has a retirement savings plan in the United States that qualifies under Section 401(k) of the Internal Revenue Code. Participating employees may contribute up to 50% of their pre-tax earnings, but not more than statutory limits. IAC contributes fifty cents for each dollar a participant contributes in this plan, with a maximum contribution of 3% of a participant's eligible earnings. Matching contributions for the plan for the years ended December 31, 2015, 2014 and 2013 are $9.1 million, $7.5 million and $6.5 million, respectively. Matching contributions are invested in the same manner as each participant's voluntary contributions in the investment options provided under the plan. An investment option in the plan is IAC common stock, but neither participant nor matching contributions are required to be invested in IAC common stock. The increase in matching contributions in 2015 is due primarily to an increase in participation in the plan due to increased headcount and recent acquisitions.

IAC also has or participates in various benefit plans, principally defined contribution plans, for its international employees. IAC's contributions for these plans for the years ended December 31, 2015, 2014 and 2013 are $2.5 million, $2.5 million and $2.6 million, respectively.