CONSOLIDATED STATEMENT OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue	$ 756,872	$ 714,470	$ 2,298,532	$ 2,035,682
Costs and expenses:
Cost of revenue (exclusive of depreciation shown separately below)	248,856	262,275	777,527	722,879
Selling and marketing expense	248,282	235,130	738,349	665,168
General and administrative expense	75,977	93,074	275,216	271,185
Product development expense	35,232	27,596	104,401	82,628
Depreciation	13,489	13,150	44,541	37,490
Amortization of intangibles	13,032	5,212	45,247	18,058
Total costs and expenses	634,868	636,437	1,985,281	1,797,408
Operating income	122,004	78,033	313,251	238,274
Equity in losses of unconsolidated affiliates	(3,253)	(3,298)	(4,422)	(28,208)
Interest expense	(7,623)	(1,391)	(22,944)	(4,102)
Other income, net	16,719	447	18,373	2,835
Earnings from continuing operations before income taxes	127,847	73,791	304,258	208,799
Income tax provision	(36,126)	(27,606)	(101,288)	(83,360)
Earnings from continuing operations	91,721	46,185	202,970	125,439
Earnings (loss) from discontinued operations, net of tax	3,914	(5,624)	1,902	(6,581)
Net earnings	95,635	40,561	204,872	118,858
Net loss (earnings) attributable to noncontrolling interests	1,305	156	3,995	(331)
Net earnings attributable to IAC shareholders	96,940	40,717	208,867	118,527
Per share information attributable to IAC shareholders:
Basic earnings per share from continuing operations (in dollars per share)	$ 1.12	$ 0.52	$ 2.47	$ 1.46
Diluted earnings per share from continuing operations (in dollars per share)	$ 1.08	$ 0.49	$ 2.39	$ 1.35
Basic earnings per share (in dollars per share)	$ 1.17	$ 0.46	$ 2.50	$ 1.38
Diluted earnings per share (in dollars per share)	$ 1.13	$ 0.43	$ 2.41	$ 1.28
Dividends declared per share (in dollars per share)	$ 0.24	$ 0.24	$ 0.72	$ 0.48
Non-cash compensation expense by function:
Total non-cash compensation expense	14,365	23,351	38,848	65,258
Cost of revenue
Non-cash compensation expense by function:
Total non-cash compensation expense	700	1,550	2,001	4,775
Selling and marketing expense
Non-cash compensation expense by function:
Total non-cash compensation expense	820	1,386	2,000	3,512
General and administrative expense
Non-cash compensation expense by function:
Total non-cash compensation expense	11,478	18,850	31,685	52,378
Product development expense
Non-cash compensation expense by function:
Total non-cash compensation expense	$ 1,367	$ 1,565	$ 3,162	$ 4,593