Shareholders’ Equity and Comprehensive Earnings (Tables)

3 Months Ended

Mar. 31, 2018

Shareholders’ Equity and Comprehensive Earnings

Schedule of activity related to accumulated other comprehensive earnings (loss)

($ in millions)	Foreign Currency Translation (Net of Tax)		Pension and Other Postretirement Benefits            (Net of Tax)		Effective Derivatives (Net of Tax)		Accumulated Other Comprehensive Earnings (Loss)
Balance at December 31, 2017	$	(307)	$	(362)	$	13	$	(656)
Other comprehensive earnings (loss) before reclassifications		14		5		(57)		(38)
Amounts reclassified from accumulated other comprehensive earnings (loss)		—		7		14		21
Balance at March 31, 2018	$	(293)	$	(350)	$	(30)	$	(673)