EARNINGS PER SHARE (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of Computation of Basic and Diluted Earnings (Loss) Per Share

The following table sets forth the computation of basic and diluted earnings per share attributable to IAC shareholders:

	Three Months Ended March 31,
	2019						2018
	Basic			Diluted			Basic			Diluted
	(In thousands, except per share data)
Numerator:
Net earnings	$	112,985		$	112,985		$	87,839		$	87,839
Net earnings attributable to noncontrolling interests	(24,290		)	(24,290		)	(16,757		)	(16,757		)
Impact from public subsidiaries' dilutive securities(a)	—			(6,696		)	—			(7,442		)
Net earnings attributable to IAC shareholders	$	88,695		$	81,999		$	71,082		$	63,640
Denominator:
Weighted average basic shares outstanding	83,905			83,905			82,983			82,983
Dilutive securities(a) (b) (c) (d)	—			6,435			—			6,086
Denominator for earnings per share—weighted average shares(a) (b) (c) (d)	83,905			90,340			82,983			89,069
Earnings per share attributable to IAC shareholders:
Earnings per share	$	1.06		$	0.91		$	0.86		$	0.71

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^(a)  IAC has the option to settle certain MTCH and ANGI stock-based awards in its shares. For the three months ended March 31, 2019 and 2018, it is more dilutive for IAC to settle certain ANGI equity awards and MTCH to settle certain MTCH equity awards.

^(b)  If the effect is dilutive, weighted average common shares outstanding include the incremental shares that would be issued upon the assumed exercise of stock options, warrants and subsidiary denominated equity, exchange of the Company's Exchangeable Notes and vesting of restricted stock units. For the three months ended March 31, 2019 and 2018, 3.4 million and 6.8 million potentially dilutive securities, respectively, are excluded from the calculation of diluted earnings per share because their inclusion would have been anti-dilutive.

^(c)  Market-based awards and performance-based stock units ("PSUs") are considered contingently issuable shares. Shares issuable upon exercise or vesting of market-based awards and PSUs are included in the denominator for earnings per share if (i) the applicable market or performance condition(s) has been met and (ii) the inclusion of the market-based awards and PSUs is dilutive for the respective reporting periods. For three months ended March 31, 2019 and 2018, 0.3 million and 0.2 million shares, respectively, underlying market-based awards and PSUs were excluded from the calculation of diluted earnings per share because the market or performance conditions had not been met.

^(d) 

It is the Company's intention to settle the Exchangeable Notes through a combination of cash, equal to the face amount of the notes, and shares; therefore, the Exchangeable Notes are only dilutive for periods during which the average price of IAC common stock exceeds the approximate$152.18 per share exchange price per $1,000 principal amount of the Exchangeable Notes. For the three months ended March 31, 2019, the average price of IAC common stock exceeded $152.18 and the dilutive impact of the Exchangeable Notes was 0.9 million shares. For the three months ended March 31, 2018, the Exchangeable Notes were anti-dilutive.