Capital Stock

9 Months Ended

Sep. 30, 2013

Capital [Abstract]

Capital Stock

Capital Stock

Use of Capital – Dividends and Stock Repurchase Program

We regularly review the appropriate use of capital, including common stock repurchases, repurchases of debt and dividends to shareholders. The declaration and payment of any dividends or repurchases of our common stock or debt securities are at the discretion of our Board of Directors and depend upon our financial condition, results of operations, future liquidity needs, regulatory and capital requirements and other factors deemed relevant by our Board of Directors.

A summary of the cash dividend activity for the nine months ended September 30, 2013 and 2012 is as follows:

Declaration Date	Record Date	Payment Date	Cash Dividend per Share		Total
Nine Months Ended September 30, 2013
February 20, 2013	March 8, 2013	March 25, 2013	$	0.3750	$	113.4
May 15, 2013	June 10, 2013	June 25, 2013	0.3750		112.7
July 23, 2013	September 10, 2013	September 25, 2013	0.3750		111.4
Nine Months Ended September 30, 2012
January 24, 2012	March 9, 2012	March 23, 2012	$	0.2875	$	95.8
May 16, 2012	June 8, 2012	June 25, 2012	0.2875		93.5
July 24, 2012	September 10, 2012	September 25, 2012	0.2875		90.7

Under our Board of Directors’ authorization, we maintain a common stock repurchase program. On September 25, 2013, the Board of Directors authorized a $3,500.0 increase to the common stock repurchase program. Repurchases may be made from time to time at prevailing market prices, subject to certain restrictions on volume, pricing and timing. The repurchases are effected from time to time in the open market, through negotiated transactions, including options and accelerated share repurchase agreements, and through plans designed to comply with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended. Our common stock repurchase program is discretionary as we are under no obligation to repurchase shares. We repurchase shares under the program when we believe it is a prudent use of capital. The excess cost of repurchased shares over par value is charged on a pro rata basis to additional paid-in capital and retained earnings.

A summary of share repurchases for the period October 1, 2013 through October 10, 2013 (subsequent to September 30, 2013) and for the nine months ended September 30, 2013 and 2012 is as follows:

	October 1, 2013 Through October 10, 2013		Nine Months Ended   September 30
			2013		2012
Shares repurchased	0.9		15.6		28.6
Average price per share	$	85.28	$	74.86	$	63.85
Aggregate cost	$	72.7	$	1,170.4	$	1,828.8
Authorization remaining at the end of each period	$	4,093.8	$	4,166.5	$	2,504.9

Stock Incentive Plans

A summary of stock option activity for the nine months ended September 30, 2013 is as follows:

	Number of Shares		Weighted- Average Option Price per Share		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at January 1, 2013	17.8		$	64.67
Granted	2.0		62.37
Exercised	(6.2	)	60.28
Forfeited or expired	(1.3	)	70.88
Outstanding at September 30, 2013	12.3		$	65.85	3.4	$	217.5
Exercisable at September 30, 2013	9.7		$	66.54	2.8	$	166.5

A summary of the status of nonvested restricted stock activity, including restricted stock units, for the nine months ended September 30, 2013 is as follows:

	Restricted Stock Shares and Units		Weighted- Average Grant Date Fair Value per Share
Nonvested at January 1, 2013	2.6		$	63.87
Granted	2.4		62.69
Vested	(0.4	)	59.64
Forfeited	(0.5	)	64.61
Nonvested at September 30, 2013	4.1		$	63.50

Fair Value

We use a binomial lattice valuation model to estimate the fair value of all stock options granted. For a more detailed discussion of our stock incentive plan fair value methodology, see Note 15, “Capital Stock,” to our audited consolidated financial statements as of and for the year ended December 31, 2012 included in our 2012 Annual Report on Form 10-K.

The following weighted-average assumptions were used to estimate the fair values of options granted during the nine months ended September 30, 2013 and 2012:

	2013		2012
Risk-free interest rate	1.25	%	1.41	%
Volatility factor	35.00	%	34.00	%
Quarterly dividend yield	0.600	%	0.400	%
Weighted-average expected life (years)	4.0		4.1

The following weighted-average fair values were determined for the nine months ended September 30, 2013 and 2012:

	2013		2012
Options granted during the period	$	14.60	$	16.51