This item represents the pretax change in net unrealized holding gain (loss) on available-for-sale securities that has been included in accumulated other comprehensive income, a separate component of shareholders' equity, during the period.

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-Name Accounting Standards Codification

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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale.

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Cash outflow for purchase of trading, available-for-sale securities and held-to-maturity securities.

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The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.

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Marketable Securities - Changes in Value of Marketable Securities Reported in Current and Non-Current Assets on Consolidated Balance Sheets (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Beginning Balance	$ 238	$ 413
Amount invested in French, German, Italian and U.S. government bonds		450	352
Sale	(184)	(630)	(818)
Change in fair value included in OCI for available-for-sale marketable securities		6
Change in fair value recognized in earnings		1
Foreign exchange result through OCI	3	(2)
Ending Balance	57	238	413
Debt Securities Issued by the U.S. Treasury [Member]
Schedule of Available-for-sale Securities [Line Items]
Beginning Balance	150	100
Amount invested in French, German, Italian and U.S. government bonds		450
Sale	(150)	(400)
Change in fair value included in OCI for available-for-sale marketable securities
Change in fair value recognized in earnings
Foreign exchange result through OCI
Ending Balance		150
Debt Securities Issued by Foreign Governments [Member]
Schedule of Available-for-sale Securities [Line Items]
Beginning Balance		81
Amount invested in French, German, Italian and U.S. government bonds
Sale		(81)
Change in fair value included in OCI for available-for-sale marketable securities
Change in fair value recognized in earnings
Foreign exchange result through OCI
Ending Balance
Fixed Rate Debt Securities Issued by Financial Institutions [Member]
Schedule of Available-for-sale Securities [Line Items]
Beginning Balance		27
Amount invested in French, German, Italian and U.S. government bonds
Sale		(25)
Change in fair value included in OCI for available-for-sale marketable securities
Change in fair value recognized in earnings
Foreign exchange result through OCI		(2)
Ending Balance
Senior debt Floating Rate Notes issued by financial institutions [Member]
Schedule of Available-for-sale Securities [Line Items]
Beginning Balance	88	205
Amount invested in French, German, Italian and U.S. government bonds
Sale	(34)	(124)
Change in fair value included in OCI for available-for-sale marketable securities		6
Change in fair value recognized in earnings		1
Foreign exchange result through OCI	3
Ending Balance	$ 57	$ 88