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Capital Stock - Narrative (Detail) $ / shares in Units, $ in Thousands																	12 Months Ended
	Dec. 22, 2021 USD ($) $ / shares	Sep. 24, 2021 USD ($) $ / shares	Jun. 23, 2021 USD ($) $ / shares	Mar. 19, 2021 USD ($) $ / shares	Feb. 09, 2021 $ / shares	Dec. 23, 2020 USD ($) $ / shares	Sep. 23, 2020 USD ($) $ / shares	Jun. 26, 2020 USD ($) $ / shares	Mar. 18, 2020 USD ($) $ / shares	Feb. 06, 2020 $ / shares	Dec. 18, 2019 USD ($) $ / shares	Sep. 20, 2019 USD ($) $ / shares	Jun. 21, 2019 USD ($) $ / shares	Mar. 20, 2019 USD ($) $ / shares	Feb. 07, 2019 $ / shares	Feb. 12, 2018 $ / shares	Dec. 31, 2021 USD ($) votes $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 $ / shares	Sep. 30, 2021 USD ($)
Class of Stock [Line Items]
Common shares, authorized (in shares) | shares																	500,000,000	500,000,000
Common shares, par value (in usd per share) | $ / shares																	$ 0.01	$ 0.01
Preferred shares, authorized (in shares) | shares																	250,000,000	250,000,000
Preferred shares, par value (in usd per share) | $ / shares																	$ 0.01	$ 0.01
Common shares, issued (in shares) | shares																	185,336,357	189,045,661
Common shares, outstanding (in shares) | shares																	185,336,357	189,045,661
Preferred shares, outstanding (in shares) | shares																	0	0
Preferred shares, issued (in shares) | shares																	0	0
Common stock, number of votes per share | votes																	1
Stock repurchase authorized amount | $																					$ 1,750,000
Shares repurchased and retired (in shares) | shares																	6,577,562	3,412,293	766,154
Common stock shares repurchased price per share | $ / shares																	$ 45.32	$ 40.16	$ 39.16
Aggregate amount of common stock shares repurchased | $																	$ 298,219	$ 137,112	$ 30,015
Expenses related to stock purchases | $																	132	$ 68	$ 15
Stock repurchase program remained available for share | $																	$ 338,911
Increase in quarterly cash dividend (in percentage)					10.00%					15.00%					13.00%
Dividends per common share (in usd per share) | $ / shares					$ 0.1075					$ 0.0975					$ 0.085	$ 0.075	$ 0.43	$ 0.39	$ 0.34
Annual dividend per common share (in usd per share) | $ / shares										$ 0.39					$ 0.34			0.39	$ 0.34
Planned annual dividend (in usd per share) | $ / shares					$ 0.43												0.43			$ 0.30
Dividends paid per share (in usd per share) | $ / shares	$ 0.1075	$ 0.1075	$ 0.1075	$ 0.1075		$ 0.0975	$ 0.0975	$ 0.0975	$ 0.0975		$ 0.085	$ 0.085	$ 0.085	$ 0.085			$ 0.1075	$ 0.0975
Initial dividend paid | $	$ 20,018	$ 20,213	$ 20,133	$ 20,115		$ 18,437	$ 18,637	$ 18,595	$ 18,543		$ 16,156	$ 16,208	$ 16,188	$ 16,119
Share repurchase open market
Class of Stock [Line Items]
Aggregate amount of common stock shares repurchased | $																	$ 298,087	$ 137,044	$ 30,000

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