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Earnings Per Share - Convertible Notes (Details) - Convertible Notes Payable - 2.625 Percent Convertible Notes Due 2024 [Member] | Jan. 29, 2019 $ / shares
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Debt Instrument [Line Items] |
Interest rate, stated percentage | 2.625%
Conversion price (in dollars per share) | $ 88.80
Hedge transactions |
Debt Instrument [Line Items] |
Option indexed to issuer's equity, strike price (in dollars per share) | 114.92
Warrant |
Debt Instrument [Line Items] |
Option indexed to issuer's equity, strike price (in dollars per share) | $ 114.92

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