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Commitments and Contingent Liabilities (Tables) | 3 Months Ended
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Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Company's Restricted Assets | The following table details the forms and value of the Company’s restricted assets as at March 31, 2017 and December 31, 2016:
| As at March 31, 2017 |  | As at December 31, 2016
| ($ in millions, except percentages)
Regulatory trusts and deposits: |  |  |
Affiliated transactions | $ | 1,355.4 |  |  | $ | 1,482.8 |
Third party | 2,364.1 |  |  | 2,380.8 |
Letters of credit / guarantees | 685.8 |  |  | 672.1 |
Total restricted assets | $ | 4,405.3 |  |  | $ | 4,535.7 |
Total as percent of investable assets(1) | 49.6 | % |  | 49.3 | %
(1) | Investable assets comprise total investments, cash and cash equivalents, accrued interest, receivables for securities sold and payables for securities purchased.
Amounts Outstanding under Operating Leases | Amounts outstanding under operating leases net of subleases as at March 31, 2017 were:
| 2017 |  | 2018 |  | 2019 |  | 2020 |  | 2021 |  | Later Years |  | Total
| ($ in millions)
Operating Lease Obligations | $ | 10.1 |  |  | $ | 15.6 |  |  | $ | 14.5 |  |  | $ | 13.7 |  |  | $ | 9.4 |  |  | $ | 80.8 |  |  | $ | 144.1 |

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- Definition Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 1,3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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- Definition Tabular disclosure of the fair value of assets, by major investment asset category, supporting separate accounts with additional insurance benefits and minimum investment return guarantees as of each date for which a statement of financial position is presented. The taxonomy for investment disclosures is utilized to tag elements that represent more detailed breakdowns of the major investment categories specified in reporting regulations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 80 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6484115&loc=d3e19393-158473 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6588021&loc=d3e7104-158389 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 80 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=6484115&loc=d3e19393-158473 + Details
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