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Financial Instruments | 6 Months Ended
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Jun. 30, 2018
Financial Instruments [Abstract] |
Financial Instruments | Financial Instruments The Company's indebtedness creates interest rate risk on its variable-rate debt. The Company uses derivative financial instruments to manage its exposure to interest rate risk. The Company does not hold or issue derivative financial instruments for trading or speculative purposes. The Company has interest rate cap agreements that entitle it to payments from the counterparty of the amount, if any, by which three-month LIBOR exceeds the strike rates of the caps during the agreement period in exchange for an upfront premium. During the first quarter of 2018, the Company entered into interest rate cap agreements with a combined notional value of $1.4 billion resulting in premiums paid to the counterparties of $13 million. As of June 30, 2018 and December 31, 2017, the Company had the following interest rate cap agreements for which the fair values are classified within Other assets on the Consolidated Balance Sheets:
|  |  |  |  |  | June 30, 2018 |  | December 31, 2017
Notional Value (in millions) |  | Effective Date |  | Maturity Date |  | Fair Value (in millions) |  | Fair Value (in millions)
$ | 1,400.0 |  |  | January 17, 2017 |  | December 31, 2018 |  | $ | 6.4 |  |  | $ | 5.4 |
1,400.0 |  |  | December 31, 2018 |  | December 31, 2020 |  | 17.1 |  |  | — |
|  |  |  |  |  | $ | 23.5 |  |  | $ | 5.4 |
The fair value of the Company's interest rate cap agreements is classified as Level 2 in the fair value hierarchy. The valuation of the interest rate cap agreements is derived by using a discounted cash flow analysis on the expected cash receipts that would occur if variable interest rates rise above the strike rates of the caps. This analysis reflects the contractual terms of the interest rate cap agreements, including the period to maturity, and uses observable market-based inputs, including LIBOR curves and implied volatilities. The Company also incorporates insignificant credit valuation adjustments to appropriately reflect the respective counterparty's nonperformance risk in the fair value measurements. The counterparty credit spreads are based on publicly available credit information obtained from a third-party credit data provider. For additional details, see Note 6 (Long-Term Debt). The interest rate cap agreements are designated as cash flow hedges. The effective portion of changes in the fair value of derivatives that qualify as cash flow hedges is recorded in Accumulated other comprehensive loss and is subsequently reclassified into Interest expense in the period when the hedged forecasted transaction affects earnings. If a derivative is deemed to be ineffective, the ineffective portion of the change in fair value of the derivative is recognized directly into earnings. The Company's interest rate cap agreements were deemed effective during both the six months ended June 30, 2018 and 2017, and the Company expects the derivatives will continue to be effective for the next twelve months. During the three and six months ended June 30, 2018, the Company recorded a gain of $2 million and $5 million, respectively, net of a tax expense for the effective portion of the interest rate cap agreements into Accumulated other comprehensive loss. During the three and six months ended June 30, 2017, the Company recorded a loss of $1 million and $2 million respectively, net of a tax benefit, for the effective portion of the interest rate cap agreements into Accumulated other comprehensive loss. During the three and six months ended June 30, 2018, the Company reclassified $1 million and $2 million, respectively, from Accumulated other comprehensive loss to earnings within Interest expense, net on the Consolidated Statement of Operations. The Company expects to reclassify $5 million from Accumulated other comprehensive loss into Interest expense, net during the next twelve months. Prior to the election of hedge accounting treatment during the first quarter of 2017, the Company recognized less than $1 million of Interest income during the six months ended June 30, 2017 in the Company's Consolidated Statement of Operations related to the changes in the fair value of the interest rate cap agreements.

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- Definition Financial Instruments [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for financial instruments. This disclosure includes, but is not limited to, fair value measurements of short and long term marketable securities, international currencies forward contracts, and auction rate securities. Financial instruments may include hedging and non-hedging currency exchange instruments, derivatives, securitizations and securities available for sale at fair value. Also included are investment results, realized and unrealized gains and losses as well as impairments and risk management disclosures. + References No definition available. + Details
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