Quarterly Financial Data (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended				1 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	May 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenues	$ 4,921	$ 4,353	$ 4,366	$ 4,262	$ 4,530	$ 3,892	$ 3,877	$ 3,748	$ 17,902	$ 16,047	$ 14,072
Gross profit	3,321	2,964	2,974	2,911	3,081	2,668	2,666	2,596	12,170	11,011	9,856
Net income	1,023	673	676	(2,326)	850	689	640	677	46	2,856	2,609
Net income per share - basic	$ 0.83	$ 0.54	$ 0.54	$ (1.82)	$ 0.66	$ 0.53	$ 0.49	$ 0.52	$ 0.04	$ 2.20	$ 2.02
Net income per share - diluted	$ 0.82	$ 0.54	$ 0.53	$ (1.82)	$ 0.65	$ 0.53	$ 0.49	$ 0.51	$ 0.04	$ 2.18	$ 1.99
Weighted average shares of common stock - basic	1,230	1,242	1,258	1,276	1,295	1,295	1,297	1,295	1,251	1,295	1,292
Weighted average common shares - diluted	1,241	1,251	1,267	1,276	1,310	1,310	1,313	1,319	1,262	1,313	1,313
(Gain) loss on divestiture of business									0	0	118	(257)
Rue La La and ShopRunner [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity method investments	75								75
Rent.com [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Gain) loss on divestiture of business													$ 118