Employee Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2012

Employee Retirement Plans [Abstract]

Summary Of The Components Of Net Periodic Benefit Cost

	Pension benefits								Postretirement benefits
	Three months ended June 30,				Six months ended June 30,				Three months ended June 30,				Six months ended June 30,
	2012		2011		2012		2011		2012		2011		2012		2011
Service cost	$	15	$	13	$	30	$	27	$	3	$	4	$	6	$	8
Interest cost		38		39		76		77		11		12		22		24
Expected return on plan assets		(40)		(40)		(80)		(81)
Amortization of net loss		18		19		35		37		4		4		8		9
Amortization of prior service cost		1		2		2		4		(1)		(2)		(2)		(3)
Total pension and postretirement benefit expense	$	32	$	33	$	63	$	64	$	17	$	18	$	34	$	38