Employee Benefits (Fair Value) (Details) (USD $) In Millions, unless otherwise specified								12 Months Ended																12 Months Ended																										12 Months Ended																						12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Fair Value [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Fair Value [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Equities [Member] Level 1 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Equities [Member] Level 1 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Equities [Member] Level 2 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Equities [Member] Level 2 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Equities [Member] Level 3 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Equities [Member] Level 3 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Equities [Member] Fair Value [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Equities [Member] Fair Value [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Private equities [Member] Level 1 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Private equities [Member] Level 1 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Private equities [Member] Level 2 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Private equities [Member] Level 2 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Private equities [Member] Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Private equities [Member] Level 3 [Member]		Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Private equities [Member] Fair Value [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Private equities [Member] Fair Value [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Corporate [Member] Level 1 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Corporate [Member] Level 1 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Corporate [Member] Level 2 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Corporate [Member] Level 2 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Corporate [Member] Level 3 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Corporate [Member] Level 3 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Corporate [Member] Fair Value [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Corporate [Member] Fair Value [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Government [Member] Level 1 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government [Member] Level 1 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Government [Member] Level 2 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government [Member] Level 2 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Government [Member] Level 3 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government [Member] Level 3 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Government [Member] Fair Value [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government [Member] Fair Value [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Absolute Return [Member] Level 1 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Absolute Return [Member] Level 1 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Absolute Return [Member] Level 2 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Absolute Return [Member] Level 2 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Absolute Return [Member] Level 3 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Absolute Return [Member] Level 3 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Absolute Return [Member] Fair Value [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Absolute Return [Member] Fair Value [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Interest bearing [Member] Level 1 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Interest bearing [Member] Level 1 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Interest bearing [Member] Level 2 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Interest bearing [Member] Level 2 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Interest bearing [Member] Level 3 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Interest bearing [Member] Level 3 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Interest bearing [Member] Fair Value [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Interest bearing [Member] Fair Value [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Total investments [Member] Level 1 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Total investments [Member] Level 1 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Total investments [Member] Level 2 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Total investments [Member] Level 2 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Total investments [Member] Level 3 [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Total investments [Member] Level 3 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Total investments [Member] Fair Value [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Total investments [Member] Fair Value [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Other assets, net [Member] Fair Value [Member]	Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Other assets, net [Member] Fair Value [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Fixed income [Member] Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Fixed income [Member] Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension assets at fair value	$ 799.4	$ 727.7	$ 633.7	$ 238.9	$ 216.1	$ 484.7	$ 461.4	$ 74.3	$ 43.6	$ 799.4	$ 727.7	$ 79.9	$ 66.5	$ 92.5	$ 85.9	$ 0	$ 0	$ 172.4	$ 152.4	$ 0	$ 0	$ 0	$ 0	$ 38.8	[1]	$ 29.0	[1]	$ 38.8	$ 29.0	$ 15.3	$ 9.9	$ 89.9	$ 74.5	$ 35.5	$ 14.6	$ 140.7	$ 99.0	$ 109.1	$ 115.8	$ 145.2	$ 148.0	$ 0	$ 0	$ 254.3	$ 263.8	$ 0.6	$ 0.3	$ 157.1	$ 153.0	$ 0	$ 0	$ 157.7	$ 153.3	$ 34.0	$ 23.6	$ 0	$ 0	$ 0	$ 0	$ 34.0	$ 23.6	$ 238.9	$ 216.1	$ 484.7	$ 461.4	$ 74.3	$ 43.6	$ 797.9	$ 721.1	$ 1.5	$ 6.6	$ 35.5	[2]	$ 14.6	[3]
Unfunded Commitments																								14.2	[1]	18.3	[1]																																													3.0	[2]	18.6	[3]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at prior year end	799.4	727.7	633.7	238.9	216.1	484.7	461.4	43.6	51.7	799.4	727.7	79.9	66.5	92.5	85.9	0	0	172.4	152.4	0	0	0	0	29.0	[1]	11.0		38.8	29.0	15.3	9.9	89.9	74.5	35.5	14.6	140.7	99.0	109.1	115.8	145.2	148.0	0	0	254.3	263.8	0.6	0.3	157.1	153.0	0	22.5	157.7	153.3	34.0	23.6	0	0	0	0	34.0	23.6	238.9	216.1	484.7	461.4	74.3	43.6	797.9	721.1	1.5	6.6	14.6	[3]	18.2
Purchases								34.0	21.6															8.4		17.2																								0	0																					25.6		4.4
Sales								(7.2)	(30.2)															(2.0)		0																								0	(21.6)																					(5.2)		(8.6)
Unrealized gain (loss)								3.9	0.5															3.4		0.8																								0	(0.9)																					0.5		0.6
Fair value of plan assets at year end	$ 799.4	$ 727.7	$ 633.7	$ 238.9	$ 216.1	$ 484.7	$ 461.4	$ 74.3	$ 43.6	$ 799.4	$ 727.7	$ 79.9	$ 66.5	$ 92.5	$ 85.9	$ 0	$ 0	$ 172.4	$ 152.4	$ 0	$ 0	$ 0	$ 0	$ 38.8	[1]	$ 29.0	[1]	$ 38.8	$ 29.0	$ 15.3	$ 9.9	$ 89.9	$ 74.5	$ 35.5	$ 14.6	$ 140.7	$ 99.0	$ 109.1	$ 115.8	$ 145.2	$ 148.0	$ 0	$ 0	$ 254.3	$ 263.8	$ 0.6	$ 0.3	$ 157.1	$ 153.0	$ 0	$ 0	$ 157.7	$ 153.3	$ 34.0	$ 23.6	$ 0	$ 0	$ 0	$ 0	$ 34.0	$ 23.6	$ 238.9	$ 216.1	$ 484.7	$ 461.4	$ 74.3	$ 43.6	$ 797.9	$ 721.1	$ 1.5	$ 6.6	$ 35.5	[2]	$ 14.6	[3]

[1] The private equities consist of four private equity funds investing in renewable solar energy, acquisition of pharmaceutical company interest and Chinese technology and healthcare companies.

[2] Consists of three fixed income funds, two of which invest in debt securities secured by royalty payments from top-tier marketers of pharmaceutical products, and one which invests in Indian mezzanine debt.

[3] The fixed income funds consist of funds which invest in debt securities by royalty payments from top-tier marketers of pharmaceutical products.