Segment Information (Tables)

3 Months Ended

Mar. 31, 2014

Reconciliation of Adjusted EBITDA to Net Income

The following table is a reconciliation of Adjusted EBITDA to net income, the most directly comparable financial measure calculated and presented in accordance with GAAP, for the periods presented:

	Three months ended
	March 31,
	2014			2013
	(in millions)
Adjusted EBITDA	$	122		$	109
Depreciation (1)		(10	)		(6	)
OIBA (2)		112			103
Amortization of intangible assets		(2	)		(1	)
Stock-based compensation		(14	)		(14	)
Other expense, net		(2	)		(4	)
Provision for income taxes		(26	)		(22	)
Net income	$	68		$	62

(1) Includes amortization of internal use software and website development costs.

(2) We define OIBA as net income (loss) plus: (1) provision for income taxes; (2) other (income) expense, net; (3) stock-based compensation; (4) amortization of intangible assets; and (5) non-recurring expenses. This operating metric is only used by our management to calculate our annual obligation for our charitable foundation. Refer to “Note 12— Commitments and Contingencies”, in the Notes to our Consolidated Financial Statements in Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2013 for information regarding our charitable foundation.