Capital Stock Transactions	12 Months Ended
	Dec. 31, 2021
Capital Stock Transactions [Abstract]
Capital Stock Transactions	18.    Capital Stock Transactions We repurchased the following capital stock: For the Years Ended December 31, 2021 2020 2019Total cost of repurchased shares (in thousands):$ 576,483 $ 175,594 $ 92,631Shares repurchased 1,195,529 384,252 269,009Weighted average price per share$ 482.20 $ 456.98 $ 344.34 In May and November 2021, the Board of Directors authorized a total of $600.0 million for additional stock repurchase under the February 2011 repurchase program. We currently have $201.9 million of authorization remaining under this share purchase plan.