Employee Benefit Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Document Fiscal Year Focus	2012
Healtchare Trust Assets	$ 40
U.S. Pension and Postretirement Plans [Member]
Employer's expected minimum contribution	50
Employer's expected maximum contribution	55
Employer contribution	21
Estimated future employer contributions in next fiscal year minimum remaining	29
Estimated future employer contributions in next fiscal year maximum remaining	34
International Pension and Postretirement Plans [Member]
Employer's expected minimum contribution	40
Employer's expected maximum contribution	45
Employer contribution	15
Estimated future employer contributions in next fiscal year minimum remaining	25
Estimated future employer contributions in next fiscal year maximum remaining	$ 30