Employee Retirement Plans (Weighted-Average Assumptions Used To Determine Net Periodic Benefit Cost) (Details)	12 Months Ended						3 Months Ended	12 Months Ended
	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2011 Domestic [Member] Pension Benefits [Member]	Dec. 31, 2010 Domestic [Member] Pension Benefits [Member]	Dec. 31, 2009 Domestic [Member] Pension Benefits [Member]	Dec. 31, 2008 Domestic [Member] Pension Benefits [Member]	Mar. 31, 2009 Domestic [Member] Postretirement Benefits [Member]	Dec. 31, 2011 Domestic [Member] Postretirement Benefits [Member]	Dec. 31, 2010 Domestic [Member] Postretirement Benefits [Member]	Dec. 31, 2008 Domestic [Member] Postretirement Benefits [Member]	Dec. 31, 2011 International [Member] Pension Benefits [Member]	Dec. 31, 2010 International [Member] Pension Benefits [Member]	Dec. 31, 2009 International [Member] Pension Benefits [Member]
Weighted-Average Assumptions Used To Determine Net Periodic Benefit Cost For Years [Line Items]
Discount rate	6.25%	6.00%	5.25%	5.75%	6.25%	6.00%	6.25%	5.25%	5.75%	6.00%	4.75%	5.75%	5.12%
Expected return on plan assets			6.50%	7.25%	7.75%						5.59%	6.01%	6.08%
Rate of compensation increase			4.25%	4.25%	5.00%						4.35%	4.04%	4.20%