Statements of Consolidated Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income		$ 245,237	$ 250,127
Other comprehensive income, net of tax:
Foreign currency translation adjustments		7,971	52,732
Pension and other postretirement benefit adjustments:
Amounts reclassified from Other comprehensive income	[1]	(360)	(209)
Total pension and other postretirement benefit adjustments		(360)	(209)
Unrealized net gains on cash flow hedges:
Amounts reclassified from Other comprehensive income	[2]	(1,530)	(988)
Total unrealized net gains on cash flow hedges		(1,530)	(988)
Other comprehensive income		6,081	51,535
Comprehensive income		251,318	301,662
Pension and other postretirement benefit adjustments, amounts reclassified from other comprehensive income, tax		148	90
Unrealized net gains on cash flow hedges, amounts reclassified from other comprehensive income, tax		$ 505	$ 1,047

[1] Net of taxes of $148 and $90 in the three months ended March 31, 2019 and 2018, respectively.

[2] Net of taxes of $505 and $1,047 in the three months ended March 31, 2019 and 2018, respectively.