Aggregate dividends paid during the period for each share of common stock outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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- References

No definition available.

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- Definition

Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

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Shareholders' Equity (Dividends Declared) (Details) - USD ($) $ / shares in Units, $ in Thousands																									12 Months Ended
	Dec. 28, 2018	Oct. 12, 2018	Sep. 21, 2018	Jul. 31, 2018	Jun. 29, 2018	Apr. 24, 2018	Mar. 23, 2018	Feb. 01, 2018	Dec. 15, 2017	Oct. 19, 2017	Sep. 22, 2017	Jul. 25, 2017	Jun. 30, 2017	Apr. 25, 2017	Mar. 24, 2017	Feb. 01, 2017	Dec. 16, 2016	Nov. 04, 2016	Sep. 23, 2016	Aug. 03, 2016	Jun. 17, 2016	Apr. 25, 2016	Mar. 25, 2016	Jan. 29, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Dividends [Abstract]
Common stock, dividends declared (in dollars per share)		$ 0.68		$ 0.63		$ 0.63		$ 0.63		$ 0.63		$ 0.63		$ 0.62		$ 0.62		$ 0.60		$ 0.60		$ 0.56		$ 0.56
Common stock, dividends paid (in dollars per share)	$ 0.68		$ 0.63		$ 0.63		$ 0.63		$ 0.63		$ 0.63		$ 0.62		$ 0.62		$ 0.60		$ 0.60		$ 0.56		$ 0.56		$ 2.57	$ 2.50	$ 2.32
Dividend Amount	$ 145,627		$ 134,844		$ 134,631		$ 134,490		$ 133,942		$ 133,936		$ 131,554		$ 129,007		$ 124,466		$ 124,262		$ 113,212		$ 65,345