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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value of Debt

The fair value of the Company's 2027 Notes, 2022 Notes and 2024 Notes are estimated based on quoted market rates as well as borrowing rates currently available to the Company for loans with similar terms and average maturities (Level 2 inputs) (in millions).

	September 30, 2019								December 31, 2018
	Nominal Unpaid Principal Balance				Aggregate Fair Value				Nominal Unpaid Principal Balance				Aggregate Fair Value
2027 Notes	$	1,200.0			$	1,248.0			$	—			$	—
2022 Notes and 2024 Notes	—				—				864.5				901.2

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- Definition

Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements.

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