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Acquisitions Acquisitions (Tables) | 12 Months Ended
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Dec. 31, 2017
Business Combinations [Abstract] |
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] | The purchase price allocation to intangible assets recorded in connection with the Chubb Corp acquisition and their related useful lives are as follows:
(in millions of U.S. dollars) | Purchase price Allocation at January 14, 2016 |  | Estimated useful life
Definite life |  |
Unearned premium reserves (UPR) intangible asset | $ | 1,550 |  | 1 year
Agency distribution relationships and renewal rights | 3,150 |  | 24 years
Internally developed technology | 95 |  | 3 years
Indefinite life |  |
Trademarks | 2,800 |  | Indefinite
Licenses | 50 |  | Indefinite
Syndicate capacity | 10 |  | Indefinite
Total identified intangible assets | $ | 7,655 |  |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] |
(in millions of U.S. dollars, except per share data) |
Purchase consideration |
Chubb Limited common shares |
Chubb Corp common shares outstanding | 228 |
Per share exchange ratio | 0.6019 |
Common shares issued by Chubb Limited | 137 |
Common share price of Chubb Limited at January 14, 2016 | $ | 111.02 |
Fair value of common shares issued by Chubb Limited to common shareholders of Chubb Corp | $ | 15,204 |
Cash consideration |
Chubb Corp common shares outstanding | 228 |
Agreed cash price per share paid to common shareholders of Chubb Corp | $ | 62.93 |
Cash consideration paid by Chubb Limited to common shareholders of Chubb Corp | $ | 14,319 |
Stock-based awards |
Fair value of equity awards issued (1) | $ | 323 |
Fair value of purchase consideration | $ | 29,846 |
Assets acquired and (liabilities) assumed |
Cash | $ | 71 |
Investments | 42,967 |
Accrued investment income | 359 |
Insurance and reinsurance balances receivable | 3,095 |
Reinsurance recoverable on losses and loss expenses | 1,676 |
Indefinite lived intangible assets | 2,860 |
Finite lived intangible assets | 4,795 |
Prepaid reinsurance premiums | 280 |
Other assets | 853 |
Unpaid losses and loss expenses | (22,923 | )
Unearned premiums | (7,011 | )
Insurance and reinsurance balances payable | (603 | )
Accounts payable, accrued expenses, and other liabilities | (2,030 | )
Deferred tax liabilities | (1,292 | )
Long-term debt | (3,765 | )
Total identifiable net assets acquired | 19,332 |
Goodwill | 10,514 |
Purchase price | $ | 29,846 |
(1) The fair value of the replacement equity awards was $525 million, of which $323 million was attributed to service periods prior to the acquisition and was included in the purchase consideration. Refer to Note 12 for further information on these replacement equity awards.
Results of Operations From Date of Business Combination [Table Text Block] | The following table summarizes the results of the acquired Chubb Corp operations since the acquisition date that have been included within our Consolidated statement of operations:
(in millions of U.S. dollars) | January 14, 2016 to December 31, 2016 |
Total revenues | $ | 12,376 |
Net income | $ | 1,756 |
Business Acquisition, Pro Forma Information [Table Text Block] |
| Year Ended December 31 |
(in millions of U.S. dollars, except per share data) | 2016 |  |  | 2015 |
Total revenues | $ | 31,937 |  |  | $ | 32,622 |
Net income | $ | 4,183 |  |  | $ | 4,478 |
Earnings per share |  |  |
Basic earnings per share | $ | 8.95 |  |  | $ | 9.61 |
Diluted earnings per share | $ | 8.88 |  |  | $ | 9.52 |

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- Definition Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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