Borrowings - Capped Call Transactions (Narrative) (Details) - Principal – 2026 Notes $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended
	Nov. 30, 2021 USD ($) $ / shares shares
Debt Instrument [Line Items]
Net cost incurred | $	$ 48.1
Number of common shares (in shares) | shares	5.6
Strike price (USD per share)	$ 308.72
Cap price (USD per share)	$ 343.02