XML 81 R59.htm IDEA: XBRL DOCUMENT
v2.4.1.9

INVESTMENTS (DETAILS 5) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Net Investment Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross investment income |  |  |  |  |  |  |  |  | $ 378,377 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents | $ 440,838 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents | $ 409,088 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents
Investment expenses |  |  |  |  |  |  |  |  | (35,611)us-gaap_InvestmentIncomeInvestmentExpense | (31,526)us-gaap_InvestmentIncomeInvestmentExpense | (28,131)us-gaap_InvestmentIncomeInvestmentExpense
Net investment income | 78,595 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents | 66,562 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents | 114,867 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents | 82,744 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents | 113,863 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents | 103,429 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents | 83,112 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents | 108,908 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents | 342,766 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents | 409,312 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents | 380,957 axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents
Fixed Maturities [Member] |  |  |  |  |  |  |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross investment income |  |  |  |  |  |  |  |  | 296,663 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_FixedMaturitiesMember | 293,609 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_FixedMaturitiesMember | 304,400 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_FixedMaturitiesMember
Other Investments [Member] |  |  |  |  |  |  |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross investment income |  |  |  |  |  |  |  |  | 57,621 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = axs_AlternativeInvestmentsMember | 128,814 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = axs_AlternativeInvestmentsMember | 87,660 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = axs_AlternativeInvestmentsMember
Equity Securities [Member] |  |  |  |  |  |  |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross investment income |  |  |  |  |  |  |  |  | 11,832 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_EquitySecuritiesMember | 10,897 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_EquitySecuritiesMember | 11,904 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_EquitySecuritiesMember
Cash And Cash Equivalents [Member] |  |  |  |  |  |  |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross investment income |  |  |  |  |  |  |  |  | 11,536 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_CashAndCashEquivalentsMember | 6,337 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_CashAndCashEquivalentsMember | 4,528 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_CashAndCashEquivalentsMember
Short-term Investments [Member] |  |  |  |  |  |  |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross investment income |  |  |  |  |  |  |  |  | $ 725 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_ShortTermInvestmentsMember | $ 1,181 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_ShortTermInvestmentsMember | $ 596 axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents / us-gaap_InvestmentTypeAxis = us-gaap_ShortTermInvestmentsMember

X
- Definition The net gain or loss (both realized and unrealized) related to investments in certain entities that calculate net asset value per share and the amount after accretion (amortization) of discount (premium), of interest income and dividend income on nonoperating securities. + References No definition available. + Details
Name: | axs_InvestmentIncomeForInvestmentsAndCashAndCashEquivalents
Namespace Prefix: | axs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net gain or loss (both realized and unrealized) related to investments in certain entities that calculate net asset value per share and the amount after accretion (amortization) of discount (premium) of interest income and dividend income on nonoperating securities, net of investment expense. + References No definition available. + Details
Name: | axs_InvestmentIncomeNetForInvestmentsAndCashAndCashEquivalents
Namespace Prefix: | axs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of expenses related to the generation of investment income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.2) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_InvestmentIncomeInvestmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentTypeAxis=axs_AlternativeInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_FixedMaturitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |