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Shareholders' Equity (Details) (USD $) In Millions, except Per Share data, unless otherwise specified |  |  | 6 Months Ended | 9 Months Ended | 1 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 1st Semi-Annual Dividend Declared in 2014 [Member] | Sep. 30, 2014 1st Semi-Annual Dividend Declared in 2014 [Member] | Oct. 29, 2014 2nd Semi-Annual Dividend Declared in 2014 [Member] Subsequent Event [Member] | Sep. 30, 2014 2nd Semi-Annual Dividend Declared in 2014 [Member] Subsequent Event [Member] | Sep. 30, 2014 Defined Benefit Pension Plans [Member] | Dec. 31, 2013 Defined Benefit Pension Plans [Member] | Sep. 30, 2014 Retiree Health Care Plan [Member] | Dec. 31, 2013 Retiree Health Care Plan [Member]
Components of Accumulated Other Comprehensive Income [Abstract] |  |  |  |  |  |  |  |  |  |
Foreign currency translation | $ 74.5 | $ 239.5 |  |  |  |  |  |  |  |
Translation loss on net investment hedge, net of income taxes of $(23.0) and $(36.7), respectively | (36.2) | (60.6) |  |  |  |  |  |  |  |
Translation loss on long-term intercompany loans | (65.2) | (73.6) |  |  |  |  |  |  |  |
Unrealized gain on investments, net of income taxes of $3.3 and $1.6, respectively | 14.9 | 11.5 |  |  |  |  |  |  |  |
Defined benefit pension plans and retiree health care plans, net of income taxes |  |  |  |  |  |  | (37.4) | (39.7) | 4.6 | 5.1
Accumulated other comprehensive (loss) income | (44.8) | 82.2 |  |  |  |  |  |  |  |
Translation loss on net investment hedge, tax | (23.0) | (36.7) |  |  |  |  |  |  |  |
Unrealized gain on investments, tax | 3.3 | 1.6 |  |  |  |  |  |  |  |
Defined benefit pension plans and retiree health care plans, tax |  |  |  |  |  |  | $ (21.0) | $ (21.8) | $ 2.4 | $ 2.7
Semi-Annual Cash Dividend [Line Items] |  |  |  |  |  |  |  |  |  |
Dividend declaration date |  |  |  | Apr. 29, 2014 |  | Oct. 29, 2014 |  |  |  |
Dividend paid (in dollars per share) |  |  | $ 0.49 |  |  |  |  |  |  |
Dividend declared (in dollars per share) |  |  |  |  | $ 0.49 |  |  |  |  |
Dividends payable, date paid |  |  |  | Jun. 16, 2014 |  | Dec. 15, 2014 |  |  |  |
Dividends payable, date of record |  |  |  | Jun. 02, 2014 |  | Dec. 01, 2014 |  |  |  |

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- Definition Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 + Details
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- Definition Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32022-110900 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 + Details
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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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