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Significant Accounting Policies Leases (Policies) | 12 Months Ended
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Dec. 31, 2019
Leases [Abstract] |
Lessee, Leases [Policy Text Block] | Leases Effective January 1, 2019, we adopted Accounting Standards Codification Topic 842, Leases ("ASC 842"), using the modified retrospective transition method. As such, we recognized a right-of-use asset and a corresponding lease liability on our Consolidated Balance Sheet for virtually all of our leases with a term of more than twelve months. Prior-year financial statements were not recast under the new standard. As an accounting policy, we have elected not to apply the recognition requirements to short-term leases, not to separate non-lease components from lease components, and have elected the package of transition provisions available for existing contracts, which allowed us to carry forward our historical assessments of (i) whether contracts are or contain leases, (ii) lease classification and (iii) initial direct costs. The adoption of ASC 842 resulted in operating lease right-of-use assets of $1,421.1 and operating lease liabilities of $1,544.4 as of January 1, 2019. We do not have a material amount of finance leases and the majority of our operating leases, for which we serve as the lessee, consist primarily of real-estate property for our offices around the world. Both the asset and liability are measured at the present value of the future lease payments, with the asset being subject to adjustments such as initial direct costs, prepaid lease payments, and lease incentives. Many of our leases provide for renewal and/or termination options, as well as escalation clauses, which are also factored into our lease payments when appropriate. Our leases have remaining lease terms of 1 year to 20 years. The discount rate used to measure the lease asset and liability is determined at the beginning of the lease term using the rate implicit in the lease, if readily determinable, or using the Company's collateralized credit-adjusted borrowing rate.

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- References No definition available. + Details
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- Definition Disclosure of accounting policy for leasing arrangement entered into by lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918666-209980 + Details
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