Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule Of Long-Term Debt Instruments

The disclosures below include details of the company's debt. Debt of CIP is detailed in Note 12, “Consolidated Investment Products.”

	March 31, 2018		December 31, 2017
$ in millions	Carrying Value**	Fair Value	Carrying Value**	Fair Value
Floating rate credit facility expiring August 11, 2022	—	—	—	—
Unsecured Senior Notes*:
$600 million 3.125% - due November 30, 2022	597.0	603.6	596.9	608.8
$600 million 4.000% - due January 30, 2024	594.3	617.9	594.0	634.7
$500 million 3.750% - due January 15, 2026	495.2	501.4	495.1	515.0
$400 million 5.375% - due November 30, 2043	389.9	457.3	389.8	499.6
Long-term debt	2,076.4	2,180.2	2,075.8	2,258.1

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* The company's senior note indentures contain certain restrictions on mergers or consolidations. Beyond these items, there are no other restrictive covenants in the indentures.

** The difference between the principal amounts and the carrying values of the senior notes in the table above reflect the unamortized debt issuance costs and discounts.