Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2011

Shareholders' Equity [Abstract]

Schedule of Stockholders Equity [Table Text Block]

	Additional		Deferred	Common Stock in Treasury
	Paid-in	Retained	Costs ‑	Shares
	Capital	Earnings	ESOP	(in thousands)		Amount
Balance at January 1, 2009	$3,976.6	$  7,654.9	$ (86.3)		889		$ 99.2
Net income		4,328.8
Cash dividends declared per share: $1.96		(2,153.3)
Retirement of treasury shares	(3.3)				(132)		(3.3)
Issuance of stock under employee stock plans-net	(85.0)				125		2.6
Stock-based compensation	368.5
ESOP transactions	6.9		8.9
Employee benefit trust contribution	371.9
Balance at December 31, 2009	4,635.6	9,830.4	(77.4)		882		98.5
Net income		5,069.5
Cash dividends declared per share: $1.96		(2,167.3)
Retirement of treasury shares	(1.0)				(28)		(1.0)
Issuance of stock under employee stock plans-net	(87.6)				10		(1.1)
Stock-based compensation	231.0
ESOP transactions	20.5		25.0
Balance at December 31, 2010	4,798.5	12,732.6	(52.4)		864		96.4
Net income		4,347.7
Cash dividends declared per share: $1.96		(2,182.5)
Retirement of treasury shares	(0.1)				(1)		(0.1)
Issuance of stock under employee stock plans-net	(108.7)				(10)		(1.0)
Stock-based compensation	147.4
ESOP transactions	49.7		52.4
Balance at December 31, 2011	$4,886.8	$14,897.8	$0.0		853		$ 95.3