Floating Rate Capital Debt (Tables)

12 Months Ended

Dec. 31, 2015

Brokers and Dealers [Abstract]

Summary of Book Values of Outstanding Subordinated Debentures

The following table summarizes the book values of the outstanding subordinated debentures as of December 31, 2015 and 2014:

TABLE 74: SUBORDINATED DEBENTURES

	DECEMBER 31,
(In Millions)	2015		2014
NTC Capital I Subordinated Debentures due January 15, 2027	$	154.1	$	154.0
NTC Capital II Subordinated Debentures due April 15, 2027	123.2		123.2
Total Subordinated Debentures	$	277.3	$	277.2