Indebtedness - Exchange Offer (Details) - USD ($)	1 Months Ended	12 Months Ended
	Feb. 28, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument
Aggregate cash payments		$ 0	$ 1,500,000,000	$ 0
Interest expense		253,600,000	$ 222,500,000	$ 187,400,000
5.200% Senior Notes due September 15, 2045 | Senior Notes
Debt Instrument
Aggregate principal amount, debt converted	$ 8,900,000
Aggregate cash payments	12,100,000
Loss on extinguishment of debt	3,200,000
Cash payments on debt extinguishment, including accrued interest	13,800,000
Interest expense	6,100,000
5.200% Senior Notes due September 15, 2045 | Senior Notes
Debt Instrument
Aggregate principal amount, debt converted	624,600,000
Aggregate principal amount		$ 1,120,000,000
Aggregate cash payments	151,800,000
3.250% Senior Notes due February 15, 2051 | Senior Notes
Debt Instrument
Aggregate principal amount	$ 700,700,000