Related Parties (Tables)

12 Months Ended

Dec. 31, 2014

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

	Years ended December 31,
$ in millions	2014	2013	2012
Affiliated operating revenues:
Investment management fees	3,609.8	3,208.2	2,754.2
Service and distribution fees	880.5	856.4	752.0
Performance fees	39.0	44.0	32.6
Other	120.5	108.5	101.6
Total affiliated operating revenues	4,649.8	4,217.1	3,640.4

	As of December 31,
$ in millions	2014	2013
Affiliated asset balances:
Cash and cash equivalents	474.9	447.8
Unsettled fund receivables	254.2	315.5
Accounts receivable	332.9	298.5
Investments	848.8	789.8
Assets held for policyholders	1,697.5	1,415.7
Other assets	7.9	5.4
Total affiliated asset balances	3,616.2	3,272.7
Affiliated liability balances:
Accrued compensation and benefits	138.8	151.6
Accounts payable and accrued expenses	61.9	19.5
Unsettled fund payables	322.1	389.9
Total affiliated liability balances	522.8	561.0