Dividend Restrictions	12 Months Ended
Dec. 31, 2015
Dividend Restrictions [Abstract]
Dividend Restrictions	13. DIVIDEND RESTRICTIONS U.S. INSURANCE SUBSIDIARIES The individual law of all states, including New Hampshire and Michigan, where Hanover Insurance and Citizens are domiciled, respectively, restrict the payment of dividends to stockholders by insurers. These laws affect the dividend paying ability of Hanover Insurance and Citizens. Pursuant to New Hampshire’s statute, the maximum dividends and other distributions that an insurer may pay in any twelve month period, without prior approval of the New Hampshire Insurance Commissioner, is limited to 10% of such insurer’s statutory policyholder surplus as of the preceding December 31. No dividends were declared by Hanover Insurance in 2015, 2014 or 2013. During 2016, the maximum dividend payable without prior approval is $218.8 million. Pursuant to Michigan’s statute, the maximum dividends and other distributions that an insurer may pay in any twelve month period, without prior approval of the Michigan Insurance Commissioner, is limited to the greater of 10% of policyholders’ surplus as of December 31 of the immediately preceding year or the statutory net income less net realized gains, for the immediately preceding calendar year. Citizens declared dividends to its parent, Hanover Insurance, totaling $63.0 million, $66.0 million and $68.0 million in 2015, 2014 and 2013, respectively. During 2016, the maximum dividend payable without prior approval is $33.4 million. In December 2016, the maximum dividend payable without prior approval will increase by $63.0 million to a total amount of $96.4 million. The statutes in both New Hampshire and Michigan require that prior notice to the respective Insurance Commissioner of any proposed dividend be provided and such Commissioner may, in certain circumstances, prohibit the payment of the proposed dividend. CHAUCER Dividend payments from Chaucer to its parent are regulated by U.K. law. Dividends from Chaucer are dependent on dividends from its subsidiaries. Annual dividend payments from Chaucer are limited to retained earnings that are not restricted by capital and other requirements for business at Lloyd’s. Also, Chaucer must provide advance notice to the U.K.’s Prudential Regulation Authority (“PRA”) of certain proposed dividends or other payments from PRA regulated entities. Dividend payments to THG from Chaucer entities totaled $61.3 million, $68.7 million and $13.9 million in 2015, 2014 and 2013, respectively.

13. DIVIDEND RESTRICTIONS

U.S. INSURANCE SUBSIDIARIES

The individual law of all states, including New Hampshire and Michigan, where Hanover Insurance and Citizens are domiciled, respectively, restrict the payment of dividends to stockholders by insurers. These laws affect the dividend paying ability of Hanover Insurance and Citizens.

Pursuant to New Hampshire’s statute, the maximum dividends and other distributions that an insurer may pay in any twelve month period, without prior approval of the New Hampshire Insurance Commissioner, is limited to 10% of such insurer’s statutory policyholder surplus as of the preceding December 31. No dividends were declared by Hanover Insurance in 2015, 2014 or 2013. During 2016, the maximum dividend payable without prior approval is $218.8 million.

Pursuant to Michigan’s statute, the maximum dividends and other distributions that an insurer may pay in any twelve month period, without prior approval of the Michigan Insurance Commissioner, is limited to the greater of 10% of policyholders’ surplus as of December 31 of the immediately preceding year or the statutory net income less net realized gains, for the immediately preceding calendar year. Citizens declared dividends to its parent, Hanover Insurance, totaling $63.0 million, $66.0 million and $68.0 million in 2015, 2014 and 2013, respectively. During 2016, the maximum dividend payable without prior approval is $33.4 million. In December 2016, the maximum dividend payable without prior approval will increase by $63.0 million to a total amount of $96.4 million.

The statutes in both New Hampshire and Michigan require that prior notice to the respective Insurance Commissioner of any proposed dividend be provided and such Commissioner may, in certain circumstances, prohibit the payment of the proposed dividend.

CHAUCER

Dividend payments from Chaucer to its parent are regulated by U.K. law. Dividends from Chaucer are dependent on dividends from its subsidiaries. Annual dividend payments from Chaucer are limited to retained earnings that are not restricted by capital and other requirements for business at Lloyd’s. Also, Chaucer must provide advance notice to the U.K.’s Prudential Regulation Authority (“PRA”) of certain proposed dividends or other payments from PRA regulated entities. Dividend payments to THG from Chaucer entities totaled $61.3 million, $68.7 million and $13.9 million in 2015, 2014 and 2013, respectively.