Stockholders' Equity and Convertible Preferred Stock (Details)		3 Months Ended				6 Months Ended
	Apr. 20, 2020 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) $ / shares shares	Mar. 31, 2020 USD ($) $ / shares	Jul. 02, 2019 USD ($) $ / shares	Apr. 02, 2019 USD ($) $ / shares	Jun. 30, 2020 USD ($) item $ / shares shares	Dec. 31, 2019 USD ($) shares
Stockholders Equity
Cash dividends declared per common share (in dollars per share) | $ / shares			$ 0.36	$ 0.33	$ 0.33
Repurchased shares since program inception | shares		53,003,428				53,003,428	52,916,434
Value of shares repurchased since program inception		$ 1,695,974,000				$ 1,695,974,000	$ 1,693,122,000
Treasury stock repurchased during period		$ 266,000	$ 2,586,000	$ 28,093,000	$ 11,071,000
Purchase Price						200,000,000
Number of shares issued (in shares) | shares		200,000
Value of shares issued		$ 189,743,000
Preferred stock direct costs		$ (10,257,000)				$ (10,257,000)
Dividends, Preferred Stock, Shares | shares		4,000
Treasury Stock
Stockholders Equity
Number of shares authorized to be repurchased | shares		56,000,000.0				56,000,000.0
Repurchased shares since program inception | shares		53,000,000.0				53,000,000.0
Value of shares repurchased since program inception		$ 1,696,000,000.0				$ 1,696,000,000.0
Shares repurchased during period | shares						12,413,000,000
Treasury stock repurchased during period						$ 300,000
Series A Convertible Preferred Stock
Stockholders Equity
Number of shares issued (in shares) | shares	200,000,000
Value of shares issued	$ 200
Price per share (in dollars per share) | $ / shares	$ 1,000
Preferred stock direct costs	$ 10,300,000
Liquidation Preference (in dollars per share) | $ / shares		$ 1,018.47				$ 1,018.47
Dividend rate (as a percent)		9.50%
Dividends, Preferred Stock, Shares | shares		3,694,000
Dividends paid in kind (in dollars per share) | $ / shares		$ 18.47
Conversion price (in dollars per share) | $ / shares						$ 22.23
Number of common shares that would be required to be issued upon conversion | shares						9.2
Beneficial ownership (as a percent)						19.90%
Threshold trading days for conversion of preferred stock | item						20
Preferred Stock, Convertible, Threshold Consecutive Trading Days | item						30
Preferred Stock, Convertible, Closing Price Of Common Stock, Percent						200.00%
Beneficial conversion feature						$ 100,000
Series A Convertible Preferred Stock | April 21, 2025 and April 19, 2026
Stockholders Equity
Redemption rate (as a percent)						1.20%
Series A Convertible Preferred Stock | At any time beginning on April 20, 2026
Stockholders Equity
Redemption rate (as a percent)						100.00%