Share repurchases Share Repurchase Tender Offer (Details) - Open Market Purchases - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock (in shares)	4,052	0
Value of treasury stock acquired	$ 303,139	$ 0
Treasury stock acquired, average cost per share	$ 74.81	$ 0

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No definition available.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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