Commitments And Contingencies (Details) In Millions, unless otherwise specified										77 Months Ended						3 Months Ended			2 Months Ended		78 Months Ended
	Feb. 28, 2010	Jun. 30, 2012 European legal proceedings [Member] USD ($)	Dec. 31, 2011 European legal proceedings [Member] USD ($)	Jun. 30, 2011 European legal proceedings [Member] USD ($)	Jun. 30, 2011 2007 Colombian plea agreement [Member] USD ($)	Jun. 30, 2012 ATS lawsuits [Member] USD ($)	Jun. 30, 2012 Total number of ATA tort lawsuits [Member]	Jun. 30, 2012 Italian customs and tax cases [Member] USD ($)	Jun. 30, 2012 Italian customs and tax cases [Member] EUR (€)	Dec. 31, 2018 Italian customs and tax cases [Member] Genoa [Member] USD ($)	Dec. 31, 2018 Italian customs and tax cases [Member] Genoa [Member] EUR (€)	Jun. 30, 2012 Italian customs and tax cases [Member] Genoa [Member] EUR (€)	Jun. 30, 2012 Italian customs and tax cases [Member] Trento [Member] EUR (€)	Jun. 30, 2012 Italian customs and tax cases [Member] Aosta [Member] USD ($)	Jun. 30, 2012 Italian customs and tax cases [Member] Alessandria [Member] EUR (€)	Mar. 31, 2012 Italian customs and tax cases [Member] Trento and Alessandria [Member]	Jun. 30, 2012 Italian customs and tax cases [Member] Trento and Alessandria [Member] USD ($)	Jun. 30, 2012 Italian customs and tax cases [Member] Trento and Alessandria [Member] EUR (€)	Jul. 31, 2011 2004 - 2005 Cases [Member] USD ($)	Jul. 31, 2011 2004 - 2005 Cases [Member] EUR (€)	Dec. 31, 2018 2004 - 2005 Cases [Member] USD ($)	Dec. 31, 2018 2004 - 2005 Cases [Member] EUR (€)	Jun. 30, 2012 2004 - 2005 Cases [Member] USD ($)	Jun. 30, 2012 2004 - 2005 Cases [Member] EUR (€)	Jun. 30, 2012 2004 - 2005 Cases [Member] 2004 cases - indirect import challenge [Member] USD ($)	Jun. 30, 2012 2004 - 2005 Cases [Member] 2004 cases - indirect import challenge [Member] EUR (€)	Jun. 30, 2012 2004 - 2005 Cases [Member] 2005 cases - indirect import challenge [Member] USD ($)	Jun. 30, 2012 2004 - 2005 Cases [Member] 2005 cases - indirect import challenge [Member] EUR (€)	Jun. 30, 2012 2004 - 2005 Cases [Member] 2004 cases - direct import challenge [Member] USD ($)	Jun. 30, 2012 2004 - 2005 Cases [Member] 2004 cases - direct import challenge [Member] EUR (€)	Jun. 30, 2012 2004 - 2005 Cases [Member] 2005 cases - direct import challenge [Member] USD ($)	Jun. 30, 2012 2004 - 2005 Cases [Member] 2005 cases - direct import challenge [Member] EUR (€)
Loss Contingency Accrual, at Carrying Value		$ 3	$ 3	$ 11	$ 7
Loss contingency, pending claims, number						9	4
Loss contingency, ATS lawsuits, number of alleged victims						4,000
Number of lawsuits seeking unspecified compensatory and punitive damages as well as attorneys' fees and costs						8
Number of lawsuits seeking treble damages and disgorgement of profits without explanation						1
Specific demand in compensatory damage at the balance sheet date						10
Specific demand in punitive damage at balance sheet date						10
Aggregate amount of original notices (excluding interest) resulting in civil customs proceedings ultimately brought and now pending								18.0	14.0			7.0	5.0	2.0	0.4
Number of jurisdictions where civil customs proceedings were ultimately brought and are now pending								4	4
Deposits made on amounts claimed that have become due and payable notwithstanding the pending appeals																	9	7
Number of monthly installments in Trento and Alessandria cases																36
Expected deposits to be made in monthly installments										11	8
Tax assessment notices issued as of balance sheet date (before interest and penalties)																									8	6	6	5
Customs assessment notices issued as of balance sheet date																							22	18					16	13	25	19
Annual deposit payments under installment plans																					7	6
Tax settlement paid																							4	3
Pricing adjustment paid for 2006 through 2009																			$ 3	€ 2
Number of lawsuits for which the motion to dismiss was granted in part and denied in part	1