Note 12 - Notes Payable (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Debt [Table Text Block]

Type	Date Paid	Amount Repaid		Interest Rate		Maturity Date
Senior unsecured notes (1)	Aug-18	$	300.0		6.875%	Oct-19
Senior unsecured notes (2)	Jun-18 & Jul-18	$	15.1		3.200%	May-21
Medium term notes ("MTN") (3)	Aug-17 & Nov-17	$	300.0		4.300%	Feb-18
Unsecured term loan	Jan-17	$	250.0	LIBOR + 0.95%		Jan-17

Schedule of Debt Issuance [Table Text Block]

Date Issued	Maturity Date	Amount Issued		Interest Rate
Aug-17	Feb-25	$	500.0		3.30%
Aug-17	Sep-47	$	350.0		4.45%
Mar-17	Apr-27	$	400.0		3.80%

Notes Payable [Member]

Notes Tables

Schedule of Debt [Table Text Block]

	Carrying Amount at December 31,					Interest Rate at December 31,								Maturity Date at
	2018			2017		2018				2017				December 31, 2018
Senior unsecured notes	$	4,334.9		$	4,650.0		2.70%	-	4.45%		2.70%	-	6.88%	May-2021– Sep-2047
Credit facility		100.0			8.0		(a)				(a)			Mar-2021
Deferred financing costs, net		(53.4	)		(61.9)		n/a				n/a				n/a
	$	4,381.5		$	4,596.1		3.48%*				3.70%*

Unsecured Debt [Member]

Notes Tables

Schedule of Maturities of Long-term Debt [Table Text Block]

	201 9		20 20		202 1		202 2		202 3		Thereafter		Total
Principal payments	$	-	$	-	$	584.9	$	500.0	$	350.0	$	3,000.0	$	4,434.9