Stockholders' Equity - Schedule of Shares Repurchased and Subsequently Retired (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2020	Mar. 31, 2020
Stockholders Equity Note [Abstract]
Number of shares repurchased	3,936	4,702
Total cost of share repurchased	$ 50,000	$ 61,357

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Balance Type:	na
Period Type:	duration