Gain (Loss) on Fair Value of Loan Notes, Issued by Variable Interest Entity

No definition available.

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- Definition

Movement in Silverton Loan Notes [Roll Forward]

+ References

No definition available.

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- Definition

The amount for notes payable (written promise to pay), due to related parties.

+ References

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- Definition

Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Amount of expenses incurred but not yet paid classified as other, due after one year or the normal operating cycle, if longer.

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- Definition

The cash inflow from a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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Variable Interest Entities Summary of Silverton Loan Notes (Details) - USD ($) $ in Millions	3 Months Ended												12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Movement in Silverton Loan Notes [Roll Forward]
Opening balance				$ 107.2				$ 277.9					$ 107.2	$ 277.9
Total change in fair value for the period	$ (0.3)	$ (1.7)	$ (3.4)	1.0	$ 17.6	$ 9.8	$ (3.3)	(2.9)	$ (3.4)	$ (9.8)	$ 0.5	$ (4.4)	(4.4)	21.2	$ (17.1)
Total distributed in the period													(107.0)	(144.2)
Closing balance as at December 31, 2018	5.7				107.2				277.9				5.7	107.2	277.9
Loan notes (long-term liabilities)	0.0				54.7								0.0	54.7
Accrued expenses (current liabilities)	5.7				52.5								5.7	52.5
Third party
Movement in Silverton Loan Notes [Roll Forward]
Opening balance				86.6				223.4					86.6	223.4
Total change in fair value for the period													4.4	(21.2)
Total distributed in the period													(86.4)	(115.6)
Closing balance as at December 31, 2018	4.6				86.6				223.4				4.6	86.6	223.4
Loan notes (long-term liabilities)	0.0				44.2								0.0	44.2
Accrued expenses (current liabilities)	4.6				42.4								4.6	42.4
Aspen Holdings
Movement in Silverton Loan Notes [Roll Forward]
Opening balance				$ 20.6				$ 54.5					20.6	54.5
Total change in fair value for the period													1.1	(5.3)
Total distributed in the period													(20.6)	(28.6)
Closing balance as at December 31, 2018	1.1				20.6				$ 54.5				1.1	20.6	$ 54.5
Loan notes (long-term liabilities)	0.0				10.5								0.0	10.5
Accrued expenses (current liabilities)	$ 1.1				$ 10.1								1.1	10.1
Aspen Holdings \| Third party
Movement in Silverton Loan Notes [Roll Forward]
Total change in fair value for the period													$ 5.5	$ (26.5)