Equity (Tables)

9 Months Ended

Sep. 30, 2012

Shareholders' Equity

											Accumulated
					Other						Other								Non-
	Common Stock				Paid-In			Retained			Comprehensive			Treasury Stock					Controlling
($ and shares in millions)	Shares		Par Value		Capital			Earnings			Loss			Shares			Cost		Interests			Total
Balance January 1, 2011		3,577	$	1,788	$	40,701		$	37,536		$	(3,216	)		495		$	(22,433)	$	2,429		$	56,805
Net income attributable to Merck & Co., Inc.		-		-		-			4,760			-			-			-		-			4,760
Cash dividends declared on common stock		-		-		-			(3,533	)		-			-			-		-			(3,533)
Treasury stock shares purchased		-		-		-			-			-			41			(1,359)		-			(1,359)
Share-based compensation plans and other		-		-		16			-			-			(11	)		377		-			393
Other comprehensive income		-		-		-			-			503			-			-		-			503
Net income attributable to noncontrolling interests		-		-		-			-			-			-			-		89			89
Distributions attributable to noncontrolling interests		-		-		-			-			-			-			-		(62	)		(62)
Balance September 30, 2011		3,577	$	1,788	$	40,717		$	38,763		$	(2,713	)		525		$	(23,415)	$	2,456		$	57,596
Balance January 1, 2012		3,577	$	1,788	$	40,663		$	38,990		$	(3,132	)		536		$	(23,792)	$	2,426		$	56,943
Net income attributable to Merck & Co., Inc.		-		-		-			5,261			-			-			-		-			5,261
Cash dividends declared on common stock		-		-		-			(3,861	)		-			-			-		-			(3,861)
Treasury stock shares purchased		-		-		-			-			-			36			(1,439)		-			(1,439)
Share-based compensation plans and other		-		-		(192	)		-			-			(39	)		1,369		-			1,177
Other comprehensive income		-		-		-			-			92			-			-		-			92
Net income attributable to noncontrolling interests		-		-		-			-			-			-			-		89			89
Distributions attributable to noncontrolling interests		-		-		-			-			-			-			-		(50	)		(50)
Balance September 30, 2012		3,577	$	1,788	$	40,471		$	40,390		$	(3,040	)		533		$	(23,862)	$	2,465		$	58,212

Accumulated Balances Related to Each Component of Other Comprehensive Income (Loss)

($ in millions)	Derivatives		Investments		Employee Benefit Plans		Cumulative Translation    Adjustment		Accumulated  Other  Comprehensive  Loss
Balance January 1, 2011	$	41	$	31	$	(2,043)	$	(1,245)	$	(3,216)
Other comprehensive (loss) income		(77)		(11)		59		532		503
Balance at September 30, 2011	$	(36)	$	20	$	(1,984)	$	(713)	$	(2,713)
Balance January 1, 2012	$	4	$	21	$	(2,346)	$	(811)	$	(3,132)
Other comprehensive (loss) income		(99)		62		45		84		92
Balance at September 30, 2012	$	(95)	$	83	$	(2,301)	$	(727)	$	(3,040)