Stockholders' Equity	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Stockholders' Equity	Stockholders' EquityThe Company's Board of Directors (the "Board") has approved a stock repurchase program (as updated from time to time, the "Program") authorizing the Company to repurchase its common stock from time to time until February 1, 2023. On October 22, 2020, the Board increased the aggregate size of the Program by $1 billion, to $4.1 billion. Since the beginning of the Program, 15,257,675 shares have been repurchased for an aggregate purchase price of $3.3 billion, leaving the Company up to $836.3 million available under the Program for future repurchases in shares of its common stock.Any stock repurchases may be made at times and in such amounts as deemed appropriate. The timing and amount of stock repurchases, if any, will depend on a variety of factors including the stock price, market conditions, corporate and regulatory requirements, and any additional constraints related to material inside information the Company may possess. Any repurchases have been and are expected to be funded by a combination of available cash flow from the business, working capital and debt.