Postretirement benefit plans (Tables)

3 Months Ended

Mar. 31, 2012

Compensation and Retirement Disclosure [Abstract]

Components of net periodic employee benefit cost

Components of net periodic employee benefit cost are as follows:

	U.S. Defined Benefit						U.S. Retiree Health Care						Non-U.S. Defined Benefit
For Three Months Ended March 31,	2012			2011			2012			2011			2012			2011
Service cost	$	6		$	6		$	1		$	1		$	10		$	9
Interest cost	11			11			6			6			19			16
Expected return on plan assets	(12		)	(11		)	(5		)	(5		)	(20		)	(19		)
Amortization of prior service cost (credit)	—			—			1			1			(1		)	(1		)
Recognized net actuarial loss	4			6			3			3			12			9
Net periodic benefit cost	$	9		$	12		$	6		$	6		$	20		$	14
Curtailment charges (credits)	—			—			(1		)	—			—			—
Special termination benefit charges (credits)	(2		)	—			—			—			—			—
Total, including charges	$	7		$	12		$	5		$	6		$	20		$	14