Interim financial statements	6 Months Ended
Jun. 30, 2017
Accounting Policies [Abstract]
Interim financial statements	Interim financial statements. The financial information contained in this report for the three and six months ended June 30, 2017 and 2016, and as of June 30, 2017, is unaudited. This report should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. A. Management’s responsibility. The accompanying interim financial statements were prepared by management, who is responsible for their integrity and objectivity. These financial statements have been prepared in conformity with U.S. generally accepted accounting principles (GAAP), including management’s best judgments and estimates. In the opinion of management, all adjustments necessary for a fair presentation of this information for all interim periods, consisting only of normal recurring accruals, have been made. The Company’s results of operations for interim periods are not necessarily indicative of results for a full year and actual results could differ. B. Consolidation. The condensed consolidated financial statements include all subsidiaries in which the Company owns more than 50% voting rights in electing directors. All significant intercompany amounts and transactions have been eliminated and provisions have been made for noncontrolling interests. Unconsolidated investees, in which the Company typically owns 20% through 50% of the equity, are accounted for by the equity method. C. Reclassifications. Certain amounts in the 2016 interim financial statements have been reclassified for comparative purposes. Net income attributable to Stewart, as previously reported, was not affected. D. Restrictions on cash and investments. The Company maintains investments in accordance with certain statutory requirements for the funding of statutory premium reserves. Statutory reserve funds, which approximated $479.2 million and $485.4 million at June 30, 2017 and December 31, 2016, respectively, are required to be fully funded and invested in high-quality securities and short-term investments. Statutory reserve funds are not available for current claim payments, which must be funded from current operating cash flow. In addition, included within cash and cash equivalents are statutory reserve funds of approximately $23.3 million and $13.9 million at June 30, 2017 and December 31, 2016, respectively. Although these cash statutory reserve funds are not restricted or segregated in depository accounts, they are required to be held pursuant to state statutes. If the Company fails to maintain minimum investments or cash and cash equivalents sufficient to meet statutory requirements, the Company may be subject to fines or other penalties, including potential revocation of its business license. These funds are not available for any other purpose. In the event that insurance regulators adjust the determination of the statutory premium reserves of the Company’s title insurers, these restricted funds as well as statutory surplus would correspondingly increase or decrease. E. Recently adopted accounting pronouncements. In May 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2017-09, Compensation - Stock Compensation: Scope of Modification Accounting, to clarify when to account for a change to the terms or conditions of a share-based payment award as a modification. Under the new standard, modification is required only if the fair value, the vesting conditions, or the classification of an award as equity or liability changes as a result of the change in terms or conditions. This ASU is effective for annual and interim periods beginning after December 15, 2017, with prospective application, and early adoption is allowed. The Company early adopted ASU 2017-09 effective June 1, 2017.

Interim financial statements. The financial information contained in this report for the three and six months ended June 30, 2017 and 2016, and as of June 30, 2017, is unaudited. This report should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.

A. Management’s responsibility. The accompanying interim financial statements were prepared by management, who is responsible for their integrity and objectivity. These financial statements have been prepared in conformity with U.S. generally accepted accounting principles (GAAP), including management’s best judgments and estimates. In the opinion of management, all adjustments necessary for a fair presentation of this information for all interim periods, consisting only of normal recurring accruals, have been made. The Company’s results of operations for interim periods are not necessarily indicative of results for a full year and actual results could differ.

B. Consolidation. The condensed consolidated financial statements include all subsidiaries in which the Company owns more than 50% voting rights in electing directors. All significant intercompany amounts and transactions have been eliminated and provisions have been made for noncontrolling interests. Unconsolidated investees, in which the Company typically owns 20% through 50% of the equity, are accounted for by the equity method.

C. Reclassifications. Certain amounts in the 2016 interim financial statements have been reclassified for comparative purposes. Net income attributable to Stewart, as previously reported, was not affected.

D. Restrictions on cash and investments. The Company maintains investments in accordance with certain statutory requirements for the funding of statutory premium reserves. Statutory reserve funds, which approximated $479.2 million and $485.4 million at June 30, 2017 and December 31, 2016, respectively, are required to be fully funded and invested in high-quality securities and short-term investments. Statutory reserve funds are not available for current claim payments, which must be funded from current operating cash flow. In addition, included within cash and cash equivalents are statutory reserve funds of approximately $23.3 million and $13.9 million at June 30, 2017 and December 31, 2016, respectively. Although these cash statutory reserve funds are not restricted or segregated in depository accounts, they are required to be held pursuant to state statutes. If the Company fails to maintain minimum investments or cash and cash equivalents sufficient to meet statutory requirements, the Company may be subject to fines or other penalties, including potential revocation of its business license. These funds are not available for any other purpose. In the event that insurance regulators adjust the determination of the statutory premium reserves of the Company’s title insurers, these restricted funds as well as statutory surplus would correspondingly increase or decrease.

E. Recently adopted accounting pronouncements. In May 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2017-09, Compensation - Stock Compensation: Scope of Modification Accounting, to clarify when to account for a change to the terms or conditions of a share-based payment award as a modification. Under the new standard, modification is required only if the fair value, the vesting conditions, or the classification of an award as equity or liability changes as a result of the change in terms or conditions. This ASU is effective for annual and interim periods beginning after December 15, 2017, with prospective application, and early adoption is allowed. The Company early adopted ASU 2017-09 effective June 1, 2017.