Leased Assets (Tables)

12 Months Ended

Dec. 31, 2011

Leases [Abstract]

Schedule of Rent Expense [Table Text Block]

Net rental expense comprised the following:

(In millions)	2011			2010			2009
Gross rental expense	$	415		$	400		$	382
Sublease rental income	(61		)	(66		)	(67		)
	$	354		$	334		$	315

Schedule of Future Minimum Rental Payments for Operating Leases and Capital Leases [Table Text Block]

The following table presents minimum future lease payments:

																2017 and
(In millions)	2012			2013			2014			2015			2016			Beyond			Total
Capital Leases
Minimum lease payments	$	16		$	14		$	2		$	2		$	2		$	15		$	51
Imputed interest	(2		)	(1		)	(1		)	(1		)	(1		)	(14		)	(20		)
Present value	$	14		$	13		$	1		$	1		$	1		$	1		$	31
Operating Leases
Minimum lease payments	$	322		$	284		$	214		$	163		$	122		$	326		$	1,431
Minimum sublease rentals	(44		)	(38		)	(28		)	(21		)	(11		)	(21		)	(163		)
	$	278		$	246		$	186		$	142		$	111		$	305		$	1,268
Imputed interest																			(297		)
Present value																			$	971