Business Combination and Integration (Tables)

12 Months Ended

Dec. 31, 2011

BUSINESS COMBINATIONS AND INTEGRATION [Abstract]

Acquisition-related and integration-related charges

The following table presents acquisition-related and integration-related charges incurred during the period.

	For the year ended December 31,
$ in millions	2011	2010
Acquisition-related charges	—	5.7
Integration-related charges:
Staff costs	2.8	39.1
Technology, contractor and related costs	11.0	53.4
Professional services	15.6	51.8
Total integration-related charges	29.4	144.3
Total transaction and integration charges	29.4	150.0