XML 39 R28.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Shareholders' Equity (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2018
Stockholders' Equity Note [Abstract] |
Dividends Declared [Table Text Block] | The following table presents dividend distributions per Common Share in Swiss francs (CHF) and U.S. dollars (USD):
| Three Months Ended |  |  | Nine Months Ended |
| September 30 |  |  | September 30 |
| 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
CHF |  |  | USD |  |  | CHF |  |  | USD |  |  | CHF |  |  | USD |  |  | CHF |  |  | USD |
Total dividend distributions per common share | 0.72 |  |  | $ | 0.73 |  |  | 0.68 |  |  | $ | 0.71 |  |  | 2.11 |  |  | $ | 2.17 |  |  | 2.06 |  |  | $ | 2.11 |
Share Repurchase Program [Table Text Block] | The following table presents repurchases of Chubb's Common Shares conducted in a series of open market transactions under the Board authorizations:
| Three Months Ended September 30 |  |  | Nine Months Ended September 30 |  |  | October 1, 2018 through October 29, 2018 |
(in millions of U.S. dollars, except share data) | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  |
Number of shares repurchased | 2,781,307 |  |  | 1,615,383 |  |  | 5,225,162 |  |  | 5,033,013 |  |  | 750,000 |
Cost of shares repurchased | $ | 379 |  |  | $ | 232 |  |  | $ | 703 |  |  | $ | 707 |  |  | $ | 94 |
Repurchase authorization remaining at end of period | $ | 297 |  |  | $ | 293 |  |  | $ | 297 |  |  | $ | 293 |  |  | $ | 203 |

X
- Definition Tabular disclosure of information related to dividends declared, including paid and unpaid dividends. + References No definition available. + Details
Name: | us-gaap_DividendsDeclaredTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 + Details
Name: | us-gaap_ScheduleOfTreasuryStockByClassTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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