Retirement Benefits - Information Comparing Plan Assets to Plan Obligations (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
US Plans [Member]
Pension plans with an accumulated benefit obligation in excess of plan assets [Abstract]
Fair value of plan assets	$ 811.8	$ 756.3
Accumulated benefit obligation	934.9	1,031.3
Projected benefit obligation	934.9	1,031.3
Non-US Plans [Member]
Pension plans with an accumulated benefit obligation in excess of plan assets [Abstract]
Fair value of plan assets	38.1	137.2
Accumulated benefit obligation	103.6	223.2
Projected benefit obligation	135.1	268.4
Pension plan [Member]
Pension plans with an accumulated benefit obligation in excess of plan assets [Abstract]
Fair value of plan assets	849.9	893.5
Accumulated benefit obligation	1,038.5	1,254.5
Projected benefit obligation	$ 1,070.0	$ 1,299.7

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If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 55

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=32704760&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920

+ Details

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- Definition

If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

+ Details

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- Definition

If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

+ Details

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