Environmental (US Superfund Sites Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2012
Environmental Remediation Obligations [Abstract]
Number of parties included in USEPA order	70
Number of other entities included in NJDEP Action, greater than	200
US Superfund, Passaic River, NJDEP suit, EPA study remedial costs estimate, low	$ 900,000,000
US Superfund, Passaic River, NJDEP suit, EPA study remedial costs estimate, high	$ 2,300,000,000
US Superfund, Passaic River, Company ultimate contribution, percentage estimate	less than approximately 1% to 2%