XML 72 R38.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Commitments and Contingencies Commitments and Contingencies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Loss Contingencies by Contingency [Table Text Block] | The following table shows the professional indemnity accrual activity and related payments.
($ in millions) |
December 31, 2014 | $ | 9.2 |
New claims | 2.9 |
Prior year claims adjustments | 7.8 |
Claims paid | (0.7 | )
December 31, 2015 | 19.2 |
New claims | 8.0 |
Prior year claims adjustments | — |
Claims paid | (19.9 | )
December 31, 2016 | 7.3 |
New claims | 21.0 |
Prior year claims adjustments | 1.4 |
Claims paid | (3.0 | )
December 31, 2017 | $ | 26.7 |

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the loss contingencies that were reported in the period or disclosed as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14472-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12021-110248 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14453-108349 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12053-110248 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14394-108349 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14615-108349 + Details
Name: | us-gaap_ScheduleOfLossContingenciesByContingencyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration