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Indebtedness	3 Months Ended
Indebtedness	Mar. 31, 2019
Debt Disclosure [Abstract]
Indebtedness	Indebtedness In January 2019, the Company issued $350 million of 4.375% senior unsecured notes due 2029. The net proceeds from this issuance were used to repay borrowings under the Company's unsecured credit facilities and for general corporate purposes.