Senior Debt	9 Months Ended
Sep. 30, 2018
Debt Disclosure [Abstract]
Senior Debt	Senior Debt The Company has a $1.45 billion senior unsecured multicurrency revolving credit facility (the “revolver”). Subject to certain conditions, the Company may further increase the commitments under the revolver by up to $350.0 million. As of September 30, 2018, outstanding borrowings under the revolver were $415.0 million. The Company also has a senior unsecured term loan facility (the “term loan” and, together with the revolver, the “credit facilities”). During the nine months ended September 30, 2018, the Company amended and refinanced the term loan to adjust the interest rates and maturity date, and to convert its denomination to pound sterling. The commercial terms of the loan otherwise remained the same. As discussed further in Note 8, the Company designated the term loan as a net investment hedge. As of September 30, 2018, the term loan totaled £290.0 million, and, subject to certain conditions, could be increased by an additional £50.0 million. The revolver matures on September 30, 2020 and the term loan matures on May 31, 2021. In October 2018, the Company further amended the term loan to convert its denomination from pound sterling to U.S. dollars, which is further described in Note 19.

Senior Debt

9 Months Ended

Sep. 30, 2018

The Company has a $1.45 billion senior unsecured multicurrency revolving credit facility (the “revolver”). Subject to certain conditions, the Company may further increase the commitments under the revolver by up to $350.0 million. As of September 30, 2018, outstanding borrowings under the revolver were $415.0 million.

The Company also has a senior unsecured term loan facility (the “term loan” and, together with the revolver, the “credit facilities”). During the nine months ended September 30, 2018, the Company amended and refinanced the term loan to adjust the interest rates and maturity date, and to convert its denomination to pound sterling. The commercial terms of the loan otherwise remained the same. As discussed further in Note 8, the Company designated the term loan as a net investment hedge. As of September 30, 2018, the term loan totaled £290.0 million, and, subject to certain conditions, could be increased by an additional £50.0 million.

The revolver matures on September 30, 2020 and the term loan matures on May 31, 2021.

In October 2018, the Company further amended the term loan to convert its denomination from pound sterling to U.S. dollars, which is further described in Note 19.