Note 6 - Fair Value Measurement of Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Funds receivable and customer accounts	$ 8,897	$ 8,094
Long-Term Investment [Member]
Fair Value Disclosure, additional details
Cost and equity method investments included in long-term investments	318	327
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash and cash equivalents	6,530	6,817
Funds receivable and customer accounts	2,500
Financial assets	14,851	12,174
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	2,872	2,591
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Long-Term Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	2,849	2,711
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Other Current Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative assets	100	55
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Other Current Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivatives liabilities	67	86
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Restricted Cash [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	14	15
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Corporate Debt Securities [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	1,678	1,153
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Corporate Debt Securities [Member] \| Long-Term Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	2,830	2,669
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Foreign Government Debt Securities [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	40	20
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Foreign Government Debt Securities [Member] \| Long-Term Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	19	42
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Bank Time Deposits [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	355	765
Estimate of Fair Value, Fair Value Disclosure \| Fair Value, Measurements, Recurring [Member] \| Equity Securities [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	785	638
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash and cash equivalents	5,295	5,685
Funds receivable and customer accounts	0
Financial assets	6,094	6,338
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	799	653
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Long-Term Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Other Current Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Other Current Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivatives liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Restricted Cash [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	14	15
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Corporate Debt Securities [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Corporate Debt Securities [Member] \| Long-Term Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Foreign Government Debt Securities [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Foreign Government Debt Securities [Member] \| Long-Term Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Bank Time Deposits [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring [Member] \| Equity Securities [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	785	638
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,235	1,132
Funds receivable and customer accounts	2,500
Financial assets	8,757	5,836
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	2,073	1,938
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Long-Term Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	2,849	2,711
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Other Current Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative assets	100	55
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Other Current Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivatives liabilities	67	86
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Restricted Cash [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	0	0
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Corporate Debt Securities [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	1,678	1,153
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Corporate Debt Securities [Member] \| Long-Term Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	2,830	2,669
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Foreign Government Debt Securities [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	40	20
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Foreign Government Debt Securities [Member] \| Long-Term Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	19	42
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Bank Time Deposits [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	355	765
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring [Member] \| Equity Securities [Member] \| Short-term Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Investments	0	0
Bank Time Deposits [Member]
Fair Value Disclosure, additional details
Held-to-maturity Securities, Current	$ 5	$ 6

Cost and equity method investments in long term investments.

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