Goodwill and Other Intangible Assets (tables)

6 Months Ended

Jun. 30, 2017

Goodwill and Other Intangible Assets disclosure

Goodwill by segment [Table Text Block]

(in millions)	June 30, 2017		December 31, 2016
Business Insurance	$	2,229	$	2,227
Bond & Specialty Insurance	550		549
Personal Insurance	784		778
Other	26		26
Total	$	3,589	$	3,580

Other intangible assets subject to amortization [Table Text Block]

(at June 30, 2017, in millions)	Gross Carrying Amount		Accumulated Amortization		Net
Subject to amortization (1)	$	210	$	163	$	47
Not subject to amortization	217		—		217
Total	$	427	$	163	$	264

(at December 31, 2016, in millions)	Gross Carrying Amount		Accumulated Amortization		Net
Subject to amortization (1)	$	210	$	159	$	51
Not subject to amortization	217		—		217
Total	$	427	$	159	$	268

(1) Intangible assets subject to amortization are comprised of fair value adjustments on claims and claim adjustment expense reserves, reinsurance recoverables and other contract and customer-related intangibles.  The time value of money and the risk adjustment (cost of capital) components of the intangible asset run off at different rates, and, as such, the amount recognized in income may be a net benefit in some periods and a net expense in other periods.

Other intangible assets not subject to amortization [Table Text Block]

(at June 30, 2017, in millions)	Gross Carrying Amount		Accumulated Amortization		Net
Subject to amortization (1)	$	210	$	163	$	47
Not subject to amortization	217		—		217
Total	$	427	$	163	$	264

(at December 31, 2016, in millions)	Gross Carrying Amount		Accumulated Amortization		Net
Subject to amortization (1)	$	210	$	159	$	51
Not subject to amortization	217		—		217
Total	$	427	$	159	$	268

(1) Intangible assets subject to amortization are comprised of fair value adjustments on claims and claim adjustment expense reserves, reinsurance recoverables and other contract and customer-related intangibles.  The time value of money and the risk adjustment (cost of capital) components of the intangible asset run off at different rates, and, as such, the amount recognized in income may be a net benefit in some periods and a net expense in other periods.