Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges

The computation of the ratio of earnings to fixed charges for the years 2006 through 2010 are as follows:

	Years Ended December 31,
(Millions)	2010	2009	2008	2007	2006
Income from continuing operations before income taxes	$     2,644.2	$ 1,901.2	$ 2,174.2	$   2,796.4	$   2,586.6
Add back fixed charges	307.7	302.9	297.9	234.3	199.5
Income as adjusted ("earnings")	$     2,951.9	$ 2,204.1	$ 2,472.1	$   3,030.7	$   2,786.1
Fixed charges:
Interest expense	$        254.6	$    243.4	$    236.4	$      180.6	$      148.3
Portion of rents representative of interest factor	53.1	59.5	61.5	53.7	51.2
Total fixed charges	$        307.7	$    302.9	$    297.9	$      234.3	$      199.5
Ratio of earnings to fixed charges	9.59	7.28	8.30	12.94	13.97